Quarterly report pursuant to Section 13 or 15(d)

Shareholders' (Deficit) Equity - Additional Information (Detail)

v2.4.0.8
Shareholders' (Deficit) Equity - Additional Information (Detail) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified
 0 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended
May 07, 2014
Jun. 30, 2014
Sep. 30, 2014
Jun. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Feb. 03, 2014
Dec. 31, 2013
Jul. 30, 2012
Mar. 31, 2014
Capped call transactions [Member]
Sep. 30, 2014
Capped call transactions [Member]
Sep. 30, 2014
Foreign Currency Translation Adjustments [Member]
Sep. 30, 2013
Foreign Currency Translation Adjustments [Member]
Sep. 30, 2014
Foreign Currency Translation Adjustments [Member]
Sep. 30, 2013
Foreign Currency Translation Adjustments [Member]
Sep. 30, 2014
Unrealized Gain (Loss) on Derivatives [Member]
Sep. 30, 2013
Unrealized Gain (Loss) on Derivatives [Member]
Sep. 30, 2014
Unrealized Gain (Loss) on Derivatives [Member]
Sep. 30, 2013
Unrealized Gain (Loss) on Derivatives [Member]
Sep. 30, 2014
Unrealized Gain (Loss) on Available-For-Sale Investments [Member]
Sep. 30, 2014
Unrealized Gain (Loss) on Available-For-Sale Investments [Member]
Feb. 28, 2014
Prepaid forward share repurchase transactions [Member]
Mar. 31, 2014
Prepaid forward share repurchase transactions [Member]
Sep. 30, 2014
Prepaid forward share repurchase transactions [Member]
Sep. 30, 2014
Open market purchases [Member]
Jun. 30, 2014
Open market purchases [Member]
Stockholders Equity [Line Items]                                                      
Dividend declared per common share         $ 0.30 $ 0.30 $ 0.90                                        
Dividend declaration date           Feb. 18, 2014                                          
Dividend payment date           Mar. 18, 2014                                          
Dividends paid     $ 0 $ 0 $ 30,800,000 $ 30,400,000 $ 92,651,000                                        
Primarily dividends received relating to forward transactions     0 0   3,416,000                                          
Share repurchase program authorized amount               1,500,000,000   1,000,000,000                                  
Share repurchase program expiration date           Jun. 30, 2017                                          
Forward share repurchase transactions amount                                             685,800,000 685,800,000      
Share repurchase transaction, shares to be purchased                                             9.9        
Settlement date of forward transactions                                                 August 15, 2019    
Retained earnings     (768,690,000)     (768,690,000)     247,279,000                             653,900,000      
Additional paid-in-capital     406,822,000     406,822,000     323,860,000                             31,900,000      
Non-cash forward transaction issuance costs           35,800,000                                          
Non-cash interest expense     1,600,000     4,200,000                                          
Repurchase of common stock, amount 266,000,000         1,278,420,000 275,821,000                                        
Repurchase agreement date           May 06, 2014                                          
Agreement expiration date           Jun. 30, 2014                                          
Repurchase of common stock, shares   4.3                                           9.9   0 9.8
Shares repurchased aggregate cost                                               685,800,000     581,300,000
Average cost per share of shares repurchased                                               $ 69.02     $ 59.41
Share repurchase program, remaining authorized capacity                                                 232,900,000    
Capped call transactions with financial institutions                       123,800,000                              
Convertible notes initial conversion price     $ 86.28     $ 86.28           $ 86.28                              
Capped call transactions price per common share                       120.79                              
Increase (decrease) in additional paid-in capital                     (123,800,000)                                
Other comprehensive income (loss) before reclassifications, Tax expense (benefits)                         (800,000) (1,800,000) 700,000 (3,600,000)                      
Other comprehensive income (loss) before reclassifications, Tax expense (benefits)                                 500,000 (300,000) 200,000 700,000              
Other comprehensive income (loss) before reclassifications, Tax expense (benefits)                                         (2,500,000) (3,500,000)          
Amounts reclassified from accumulated other comprehensive income (loss) to income, tax expense     2,400,000     3,400,000                                          
Amounts reclassified from accumulated other comprehensive income (loss) to income, tax expense unrealized gain (loss) on derivatives         $ 100,000   $ 800,000