Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross carrying value of goodwill		$ 2,200,000,000
Accumulated goodwill impairment		2,100,000,000
Goodwill impairment charge		0	$ 0	$ 0	$ 0	$ 2,100,000,000
Goodwill		86,841,000	86,841,000
Amortization expense on intangible assets		21,653,000	2,889,000	3,669,000
Non-cash impairment charge		109,910,000
Income tax benefit		5,229,000	$ 32,096,000	$ 42,325,000
Trademarks
Finite-Lived Intangible Assets [Line Items]
Non-cash impairment charge	$ 109,900,000	$ 109,910,000
Income tax benefit	$ 41,200,000
Remaining amortization period (in years)		5 years