Goodwill and Intangible Assets - Narrative (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	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			$ 2,240,000,000
Accumulated goodwill impairment			(2,080,000,000)
Goodwill impairment loss			0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 2,080,000,000
Non-cash impairment charge			109,910,000	109,910,000
Income tax benefit			26,179,000	(82,034,000)	5,229,000
Amortization expense on intangible assets			20,710,000	20,752,000	$ 21,653,000
Customer-Related and Other
Finite-Lived Intangible Assets [Line Items]
Non-cash impairment charge			0	0
Net finite-lived intangible assets			39,287,000	41,875,000
Trademarks
Finite-Lived Intangible Assets [Line Items]
Non-cash impairment charge		$ 109,900,000	109,910,000	109,910,000
Income tax benefit		$ 41,200,000
Net finite-lived intangible assets			62,610,000	78,043,000
Finite-lived intangible assets acquired			900,000
Trademarks
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)			58,600,000	$ 52,000,000
Minimum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Remaining amortization period	3 years
Maximum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Remaining amortization period	8 years
Uncle Matt's | Customer-Related and Other
Finite-Lived Intangible Assets [Line Items]
Net finite-lived intangible assets			1,800,000
Uncle Matt's | Trademarks
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)			$ 6,600,000