Background and Basis of Presentation (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Dividends Payable [Line Items]
Dividends declared (usd per share)	$ 0.48	$ 0.48	$ 0.44	$ 0.44	$ 0.44	$ 0.44	$ 0.41	$ 0.41	$ 1.84	$ 1.70	$ 1.58
Annualized dividend rate									$ 1.92
Dividend Declared [Member] | Common Stock [Member]
Dividends Payable [Line Items]
Increase in rate of dividend		9.10%
SABMiller Plc [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	26.80%								26.80%