Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.6.0.2
Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax [Line Items]      
Unrealized excess tax benefits $ 29.6 $ 25.4  
Tax loss and credit carryforwards of certain foreign subsidiaries 115.1 121.4  
Amount of tax loss and credit carryforwards that will expire between 2017 and 2026 81.5    
Amount of tax loss and credit carryforwards that can be carried forward indefinitely 33.6    
Domestic foreign tax credit carryforwards 99.6 76.7  
State tax loss carryforwards 0.8    
Increase in deferred tax assets tax credit carryforwards foreign $ 22.9    
Percentage of domestic source income reclassified as foreign source income 50.00%    
Deferred tax assets tax credit carryforwards foreign resulting from overall domestic loss $ 25.7    
Valuation allowance 115.4 121.3  
Valuation allowance, deferred tax asset, change in amount 5.9 208.7 $ 82.4
Reductions charged to income tax expenses (5.6) (205.6) 85.7
Other comprehensive income (loss), foreign currency translation gain (loss) arising during period, tax 0.3 3.1 (3.3)
Unremitted earnings that were permanently reinvested relating to operating subsidiaries 2,500.0    
Deferred tax asset on unremitted foreign earnings   6.4  
Deferred tax liability on unremitted foreign earnings $ 5.5    
Effective tax rate applied 35.00%    
Total amount of unrecognized tax benefits, including related interest and penalties $ 62.0 58.0 47.2
Unrecognized tax benefits excluding interest and penalties that if recognized would affect the effective tax rate 44.8 44.1  
Total accrued interest for tax contingencies 9.4 7.1 5.5
Total accrued penalties for tax contingencies 2.1 1.5 1.1
Increase in interest expense related to uncertain tax positions 2.7 2.0 1.9
Increase in penalties to uncertain tax positions 0.7 $ 0.6 $ 0.3
Amount of unrecognized tax benefits that could decrease within the next 12 months 11.0    
Decrease in unrecognized tax benefits due to the settlement of audits or resolution of administrative or judicial proceedings 5.5    
Decrease in unrecognized tax benefits expiration of statute of limitations $ 5.5    
Earliest Tax Year [Member]      
Income Tax [Line Items]      
Open tax years by major tax jurisdiction 2009    
Domestic [Member]      
Income Tax [Line Items]      
Domestic research and development tax credit carryforward $ 2.2    
State [Member] | Earliest Tax Year [Member]      
Income Tax [Line Items]      
Expiration year of tax loss carryforwards 2021    
State [Member] | Latest Tax Year [Member]      
Income Tax [Line Items]      
Expiration year of tax loss carryforwards 2036    
United States [Member]      
Income Tax [Line Items]      
Unremitted earnings that were permanently reinvested $ 131.9    
Carryforwards expiring in 2021 [Member]      
Income Tax [Line Items]      
Expiration date of tax credit carryforwards Dec. 31, 2021    
Carryforwards expiring in 2026 [Member]      
Income Tax [Line Items]      
Expiration date of tax credit carryforwards Dec. 31, 2026    
Carryforwards expiring in 2024 [Member]      
Income Tax [Line Items]      
Expiration date of tax credit carryforwards Dec. 31, 2024    
Research and Development [Member] | Domestic [Member]      
Income Tax [Line Items]      
Expiration year of tax credit carryforwards 2036