Common Stock and Share-Based Compensation - Summary of Share Based Compensation Expense Recognized (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 1,552	$ 3,511		$ 6,802	$ 17,104
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	75	418	[1]	338	6,347	[1]
Stock Options | Whitewave
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		200			5,600
Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	892	1,467	[1]	3,279	4,010	[1]
Stock Units | Whitewave
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		400			700
Phantom Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 585	$ 1,626		$ 3,185	$ 6,747

[1] The share-based compensation expense recorded during the three and nine months ended September 30, 2013 includes additional compensation expense of $0.2 million and $5.6 million, respectively, for stock options and $0.4 million and $0.7 million, respectively, for stock units related to the equity modification of share-based compensation pursuant to the WhiteWave spin-off described above.