Discontinued Operations - Additional Information (Detail) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jan. 31, 2013 Morningstar	Mar. 31, 2014 Morningstar	Mar. 31, 2013 Morningstar	Mar. 31, 2014 WhiteWave Foods transaction	Mar. 31, 2013 WhiteWave Foods	Dec. 31, 2012 IPO [Member] WhiteWave Foods	Jun. 30, 2013 Spinoff [Member] WhiteWave Foods	Sep. 30, 2013 Equity Swap [Member] WhiteWave Foods
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number Of Transactions Related To Spin-Off And Disposal						3
Sale of Stock, Percentage of Shares Offered								13.30%	66.80%	19.90%
Net cash proceed for full repayment of debt			$ 1,450,000,000
Net pre-tax gain related to divestiture			871,300,000
Gain on sale of discontinued operations, net of tax	836,000	491,885,000	492,200,000
Discontinued operations transaction costs				$ 0	$ 0	$ 0	$ 3,500,000