Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Additional Information (Detail)

v3.19.3.a.u2
Long-Term Debt - Additional Information (Detail)
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 12, 2019
USD ($)
Aug. 15, 2019
USD ($)
Aug. 16, 2018
USD ($)
Aug. 16, 2018
USD ($)
Feb. 15, 2017
USD ($)
Mar. 09, 2016
USD ($)
May 04, 2015
Aug. 31, 2018
USD ($)
Mar. 31, 2018
USD ($)
$ / shares
Feb. 28, 2014
USD ($)
$ / shares
Mar. 31, 2014
USD ($)
Dec. 31, 2019
USD ($)
Day
$ / shares
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Sep. 30, 2018
USD ($)
Mar. 09, 2011
USD ($)
Debt Instrument [Line Items]                                
Outstanding principal amount                       $ 1,929,900,000        
Credit facility, amount repaid                         $ 1,231,900,000 $ 483,100,000    
Loss on extinguishment of debt                         48,500,000      
Borrowings under the senior secured credit facility                       965,300,000 983,600,000      
Interest expense                       153,000,000.0 181,000,000.0 160,800,000    
Amortization of deferred financing costs                       5,300,000 7,300,000 8,400,000    
Paid-in-capital in excess of par value                       366,600,000 341,500,000      
Long-term debt                       1,803,000,000.0 2,453,800,000      
Convertible notes paid                       675,000,000.0 582,500,000      
Letters of credit issued but undrawn                       41,900,000        
Capped call transactions [Member]                                
Debt Instrument [Line Items]                                
Capped call transactions with financial institutions                   $ 123,800,000            
Prepaid forward share repurchase transactions [Member]                                
Debt Instrument [Line Items]                                
Forward share repurchase transactions amount                   685,800,000 $ 685,800,000          
Convertible Senior Notes Due 2019 [Member]                                
Debt Instrument [Line Items]                                
Outstanding principal amount                   1,150,000,000     675,000,000.0      
Deferred financing costs                     26,600,000          
Aggregate principal amount of convertible senior notes issued                   1,000,000,000            
Interest expense                       27,000,000.0 48,500,000 68,200,000    
Non-cash interest expense                       17,000,000.0 29,800,000 41,200,000    
Amortization of deferred financing costs                       $ 1,700,000 2,900,000 4,000,000.0    
Additional principal amount of convertible notes                   $ 150,000,000            
Convertible notes, interest rate                   2.00%   2.00%        
Convertible notes maturity                   Aug. 15, 2019   Aug. 15, 2019        
Principal amount of convertible notes                   $ 1,000            
Convertible notes conversion rate                   23.1816            
Convertible notes conversion price | $ / shares                   $ 43.14            
Paid-in-capital in excess of par value                   $ 219,100,000 5,100,000          
Long-term debt                   $ 930,900,000            
Effective interest rate on convertible notes                   6.20%            
Convertible notes paid   $ 675,000,000.0             $ 583,500,000              
Accrued interest   $ 6,700,000             1,000,000.0              
Fair value of liability to convertible notes                         662,100,000      
Unamortized debt discount and debt issuance costs                         18,600,000      
Convertible senior notes, carrying value of liability component                         656,400,000      
Convertible Senior Notes Due 2019 [Member] | Repurchase of 2019 Convertible Notes [Member]                                
Debt Instrument [Line Items]                                
Loss on extinguishment of debt                 13,100,000       13,100,000      
Repurchase of convertible notes                 475,000,000.0       475,000,000.0      
Fair value of liability to convertible notes                 459,400,000              
Fair value of equity component to convertible notes                 123,000,000.0              
Reduction to long-term debt representing liability component of convertible notes                 446,400,000              
Reduction to additional paid-in capital representing equity component                 123,000,000.0              
Convertible Senior Notes Due 2019 [Member] | Debt Issuance Costs [Member]                                
Debt Instrument [Line Items]                                
Deferred financing costs                     $ 21,500,000          
Convertible Senior Notes Due 2024 [Member]                                
Debt Instrument [Line Items]                                
Outstanding principal amount                       $ 550,000,000.0 550,000,000.0      
Deferred financing costs                 12,900,000              
Aggregate principal amount of convertible senior notes issued                 $ 550,000,000              
Interest expense                       35,800,000 26,600,000      
Non-cash interest expense                       20,000,000.0 14,500,000      
Amortization of deferred financing costs                       $ 1,400,000 1,000,000.0      
Convertible notes, interest rate                 2.625%     2.625%        
Convertible notes maturity                 Mar. 15, 2024     Mar. 15, 2024        
Principal amount of convertible notes                 $ 1,000     $ 1,000        
Convertible notes conversion rate                 16.0056     16.0352        
Convertible notes conversion price | $ / shares                 $ 62.48     $ 62.36        
Paid-in-capital in excess of par value                 $ 139,900,000              
Long-term debt                 $ 410,100,000              
Effective interest rate on convertible notes                 8.40%              
Fair value of liability to convertible notes                       $ 508,600,000 448,100,000      
Unamortized debt discount and debt issuance costs                       112,600,000 134,000,000.0      
Convertible senior notes, carrying value of liability component                       $ 437,400,000 416,000,000.0      
Convertible notes, conversion feature                       Holders of the 2024 Convertible Notes may convert their notes at their option under the following circumstances: (i) during any calendar quarter commencing after the calendar quarter ending June 30, 2018, if the last reported sale price of the Company’s common shares for at least 20 trading days (whether or not consecutive) in a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter exceeds 130% of the conversion price for the 2024 Convertible Notes on each applicable trading day; (ii) during the five business-day period immediately after any five consecutive trading day period, or the measurement period, in which the trading price per $1,000 principal amount of 2024 Convertible Notes for each trading day of that measurement period was less than 98% of the product of the last reported sale price of the Company’s common shares and the conversion rate for the 2024 Convertible Notes for each such day; (iii) if the Company calls the 2024 Convertible Notes for redemption; or (iv) upon the occurrence of specified corporate events. On and after December 15, 2023, holders may convert their 2024 Convertible Notes at any time, regardless of the foregoing circumstances.        
Convertible notes, number of trading days of threshold limit (whether or not consecutive) | Day                       20        
Convertible notes, number of trading days of threshold limit in consecutive days | Day                       30        
Minimum percentage of common share price over conversion price for conversion                 130.00%              
Minimum percentage of the product of common share price and conversion rate for convertible notes                 98.00%              
Deferred financing costs recorded as additional paid-in-capital in excess of par value                 $ 3,300,000              
Convertible Senior Notes Due 2024 [Member] | Debt Issuance Costs [Member]                                
Debt Instrument [Line Items]                                
Deferred financing costs                 $ 9,600,000              
Senior Notes Due 2026 [Member]                                
Debt Instrument [Line Items]                                
Outstanding principal amount                       $ 400,000,000.0 400,000,000.0      
Deferred financing costs                       4,700,000 5,200,000   $ 5,400,000  
Aggregate principal amount of convertible senior notes issued               $ 400,000,000                
Interest expense                       29,500,000 11,100,000      
Amortization of deferred financing costs                       $ 500,000 200,000      
Convertible notes, interest rate               7.25%       7.25%        
Convertible notes maturity               Aug. 15, 2026       Aug. 15, 2026        
Senior notes, redemption price, percentage               100.00%                
Senior notes, redemption price percentage with equity offerings               107.25%                
Carrying amount                       $ 395,300,000 394,800,000      
Fair value of notes                       $ 424,100,000 394,600,000      
Senior Notes Due 2026 [Member] | Debt Issuance Costs [Member]                                
Debt Instrument [Line Items]                                
Deferred financing costs                             $ 5,400,000  
Maximum [Member] | Senior Notes Due 2026 [Member]                                
Debt Instrument [Line Items]                                
Percentage of aggregate pricipal amount of senior notes being redeemed               40.00%                
2011 Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Credit facility, amount repaid                           410,000,000.0    
2011 Credit Facility [Member] | 2011 Revolving Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maximum amount                               $ 700,000,000.0
Credit facility amendment date                       May 04, 2015        
Line of credit facility extended maturity period                       1 year        
Amended maturity date of credit facility                       Mar. 09, 2017        
Repayment of prior senior secured credit facility         $ 410,000,000.0                      
Revolving credit facility termination date                       Feb. 15, 2017        
2011 Credit Facility [Member] | 2011 Revolving Credit Facility [Member] | LIBOR [Member] | Minimum [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate             4.00%                  
2011 Credit Facility [Member] | 2011 Revolving Credit Facility [Member] | LIBOR [Member] | Maximum [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate             5.00%                  
2011 Credit Facility [Member] | 2011 Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate             3.00%                  
2011 Credit Facility [Member] | 2011 Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate             4.00%                  
2011 Credit Facility [Member] | 2011 Term Loan [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maximum amount                               $ 500,000,000.0
Credit facility amendment date                       Jul. 26, 2012        
Credit facility, maturity date                       Mar. 09, 2016        
Repayment of prior senior secured credit facility           $ 229,700,000                    
2011 Credit Facility [Member] | 2011 Term Loan [Member] | LIBOR [Member] | Minimum [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate             2.00%                  
2011 Credit Facility [Member] | 2011 Term Loan [Member] | LIBOR [Member] | Maximum [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate             3.00%                  
2011 Credit Facility [Member] | 2011 Term Loan [Member] | Base Rate [Member] | Minimum [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate             1.00%                  
2011 Credit Facility [Member] | 2011 Term Loan [Member] | Base Rate [Member] | Maximum [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate             2.00%                  
2017 Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maximum amount         1,450,000,000.0                      
Credit Facility amended, effective date                       Mar. 16, 2018        
Deferred financing costs         $ 22,600,000                      
Credit facility, amount repaid     $ 1,178,100,000                   1,226,900,000 73,100,000    
Credit facility, amount borrowed                           1,300,000,000.0    
2017 Credit Facility [Member] | Other Expense (Income), Net [Member]                                
Debt Instrument [Line Items]                                
Loss on extinguishment of debt                         35,400,000      
2017 Credit Facility [Member] | LIBOR [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate         1.00%                      
2017 Credit Facility [Member] | Base Rate [Member]                                
Debt Instrument [Line Items]                                
Base rate interest rate floor         1.75%                      
2017 Credit Facility [Member] | Federal Funds Rate [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate         0.50%                      
2017 Credit Facility [Member] | 2017 Revolving Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maximum amount         $ 150,000,000.0                      
Credit facility, maturity date                       Feb. 15, 2022        
Repayment of prior senior secured credit facility     1,178,100,000                          
Credit facility LIBOR minimum floor rate interest         0.75%                      
2017 Credit Facility [Member] | 2017 Revolving Credit Facility [Member] | Base Rate [Member] | Scenario Leverage Ratio One [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate         3.50%                      
2017 Credit Facility [Member] | 2017 Revolving Credit Facility [Member] | Base Rate [Member] | Scenario Leverage Ratio Two [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate         3.75%                      
2017 Credit Facility [Member] | 2017 Revolving Credit Facility [Member] | Eurodollar [Member] | Scenario Leverage Ratio One [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate         4.50%                      
2017 Credit Facility [Member] | 2017 Revolving Credit Facility [Member] | Eurodollar [Member] | Scenario Leverage Ratio Two [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate         4.75%                      
2017 Credit Facility [Member] | 2017 Term Loan B [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maturity date                       Feb. 15, 2023        
Outstanding principal amount         $ 1,300,000,000.0                      
Senior secured credit facility, discount percentage         2.00%                      
Senior secured credit facility, discount amount         $ 26,000,000.0                      
2017 Credit Facility [Member] | 2017 Term Loan B [Member] | Base Rate [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate         4.50%                      
2017 Credit Facility [Member] | 2017 Term Loan B [Member] | Eurodollar [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate         5.50%                      
2017 Credit Facility [Member] | 2017 Term Loan B [Member] | 2017 Revolving Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Revolving credit facility termination date                       Aug. 16, 2018        
2018 Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maximum amount     1,250,000,000 $ 1,250,000,000                        
Credit facility amendment date                       Dec. 12, 2019        
Deferred financing costs $ 1,200,000   11,700,000 11,700,000                        
Credit facility, amount repaid                       $ 20,000,000.0 $ 5,000,000.0      
Line of credit facility, frequency of interest payments                       quarterly        
Long-term debt, weighted average interest rate                       5.52% 6.80%      
Credit facility, amount borrowed                         $ 1,000,000,000.0      
Borrowings under the senior secured credit facility                       $ 975,000,000.0 995,000,000.0      
Foreign currency borrowings, outstanding                       0 0      
Interest expense                       58,900,000        
Non-cash interest expense                       200,000        
Amortization of deferred financing costs                       $ 1,700,000        
2018 Credit Facility [Member] | Minimum [Member] | 2024 Convertible Notes Exceeds 350 Million [Member]                                
Debt Instrument [Line Items]                                
Outstanding principal amount     350,000,000.0 350,000,000.0                        
2018 Credit Facility [Member] | LIBOR [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate                       1.00%        
2018 Credit Facility [Member] | Base Rate [Member]                                
Debt Instrument [Line Items]                                
Base rate interest rate floor                       1.00%        
2018 Credit Facility [Member] | Federal Funds Rate [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate                       0.50%        
2018 Credit Facility [Member] | 2018 Revolving Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maximum amount     $ 250,000,000.0 250,000,000.0                        
Credit facility, maturity date     Aug. 16, 2023                          
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage                       0.50%        
Borrowings under the senior secured credit facility                       $ 0 0      
2018 Credit Facility [Member] | 2018 Revolving Credit Facility [Member] | Base Rate [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate                       2.00%        
2018 Credit Facility [Member] | 2018 Revolving Credit Facility [Member] | Eurodollar [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate                       2.00%        
2018 Credit Facility [Member] | 2018 Term Loan A [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maturity date     Aug. 16, 2023                          
Outstanding principal amount     $ 250,000,000.0 250,000,000.0                        
Borrowings under the senior secured credit facility                       $ 234,400,000 246,900,000      
2018 Credit Facility [Member] | 2018 Term Loan A [Member] | Level 2 [Member]                                
Debt Instrument [Line Items]                                
Outstanding principal amount                       233,200,000 245,400,000      
Debt instrument, fair value                       $ 235,700,000 240,700,000      
2018 Credit Facility [Member] | 2018 Term Loan A [Member] | Base Rate [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate                       3.00%        
2018 Credit Facility [Member] | 2018 Term Loan A [Member] | Eurodollar [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate                       3.00%        
2018 Credit Facility [Member] | 2018 Term Loan B [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maturity date     Aug. 18, 2025                          
Outstanding principal amount     $ 750,000,000.0 750,000,000.0                        
Senior secured credit facility, discount percentage     0.25%                          
Senior secured credit facility, discount amount     $ 1,900,000 $ 1,900,000                        
Voluntary prepayment premium percentage                       1.00%        
Borrowings under the senior secured credit facility                       $ 740,600,000 748,100,000      
2018 Credit Facility [Member] | 2018 Term Loan B [Member] | Level 2 [Member]                                
Debt Instrument [Line Items]                                
Outstanding principal amount                       732,100,000 738,200,000      
Debt instrument, fair value                       $ 744,800,000 729,300,000      
2018 Credit Facility [Member] | 2018 Term Loan B [Member] | 2024 Convertible Notes Exceeds 350 Million [Member]                                
Debt Instrument [Line Items]                                
Credit facility, maturity date     Dec. 15, 2023                          
2018 Credit Facility [Member] | 2018 Term Loan B [Member] | Base Rate [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate 1.75%     2.25%               1.75%        
2018 Credit Facility [Member] | 2018 Term Loan B [Member] | Eurodollar [Member]                                
Debt Instrument [Line Items]                                
Interest rate spread on variable rate 2.75%     3.25%               2.75%        
Senior Unsecured Notes [Member]                                
Debt Instrument [Line Items]                                
Aggregate principal amount of convertible senior notes issued     $ 400,000,000 $ 400,000,000                        
2018 and 2017 Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Interest expense                         83,600,000      
Non-cash interest expense                         2,900,000      
Amortization of deferred financing costs                         $ 3,200,000      
2017 and 2011 Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Interest expense                           87,000,000.0    
Non-cash interest expense                           4,200,000    
Amortization of deferred financing costs                           $ 4,400,000