Commitments and Contingent Liabilities - Additional Information (Detail) In Millions, unless otherwise specified	12 Months Ended					12 Months Ended				12 Months Ended
	Dec. 31, 2012 USD ($) Director Derivative	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 Russian Alcohol USD ($)	Dec. 31, 2012 Russian Alcohol RUB	Dec. 31, 2012 Russian Alcohol Minimum	Dec. 31, 2012 Russian Alcohol Maximum	Dec. 31, 2012 Bravo Premium USD ($)	Dec. 31, 2012 Bravo Premium RUB	Dec. 31, 2012 Bravo Premium Minimum	Dec. 31, 2012 Bravo Premium Maximum	Dec. 31, 2012 Whitehall USD ($)	Dec. 31, 2012 Whitehall RUB	Dec. 31, 2012 Internal Revenue Service, State Tax Authorities And Poland Tax Authorities PLN	Dec. 31, 2012 Poland USD ($)	Dec. 31, 2012 Poland PLN
Commitments And Contingent Liabilities [Line Items]
Total rental expenses related to operating leases	$ 13.4	$ 12.5	$ 11.3
Amount under bank guarantee				$ 951.2	29,000.0			$ 20.3	618.4			$ 55.8	1,700.0	700.0	$ 1.6	4.9
Term of bank guarantee, years						1 years	5 years			1 years	2 years
Number of current and former directors	7
Number of derivative actions against directors	2
Number of complaints filed	1