Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Sep. 30, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income Tax [Line Items]
Income tax credits			$ 7,000,000	[1]	$ 5,200,000	[1]	$ 53,300,000
Percentage of tax benefit of a qualifying position greater than largest amount of tax benefit			50.00%
Unrecognized tax benefits related to federal, state and foreign taxes			36,100,000		58,000,000		43,400,000
Unrecognized tax benefits that would impact effective tax rate			31,000,000
Accrued interest			2,900,000		6,600,000
Interest and penalties, expenses			(200,000)		1,300,000		(200,000)
Reduction in income tax provision	(10,900,000)	(2,200,000)	(10,900,000)
Decrease in unrecognized tax benefits within the next 12 months			11,600,000
Number of months unrecognized tax benefits may decrease			12 months
Undistributed earnings on foreign operations for which income taxes have not been provided			2,100,000,000
United States - federal
Income Tax [Line Items]
Operating loss carryforwards, net			50,400,000
United States - federal | Minimum
Income Tax [Line Items]
Operating loss carryforwards, expiration year			2027
United States - federal | Maximum
Income Tax [Line Items]
Operating loss carryforwards, expiration year			2034
State and Local Jurisdiction
Income Tax [Line Items]
Operating loss carryforwards, net			395,000,000
State and Local Jurisdiction | Minimum
Income Tax [Line Items]
Operating loss carryforwards, expiration year			2015
State and Local Jurisdiction | Maximum
Income Tax [Line Items]
Operating loss carryforwards, expiration year			2034
Foreign Tax Authority
Income Tax [Line Items]
Operating loss carryforwards, net			25,900,000
Indefinite Life
Income Tax [Line Items]
Income tax credits			11,800,000
Definite Life
Income Tax [Line Items]
Income tax credits			$ 14,200,000
Definite Life | Minimum
Income Tax [Line Items]
Income tax credits carryforwards, expiration year			2017
Definite Life | Maximum
Income Tax [Line Items]
Income tax credits carryforwards, expiration year			2033

[1] Litigation charges, net reduced the tax benefit recognized from the incentive tax grant in Puerto Rico.