Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	$ (898.4)
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	33.6	$ (136.8)	$ 240.7
Tax adjustment related to investment in MillerCoors reclassification			$ 34.3
Balance	$ (1,694.9)	$ (898.4)
MillerCoors [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
MCBC economic Interest (as a percent)	42.00%	42.00%	42.00%
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	$ 129.8	$ 979.1	$ 1,187.5
Foreign currency translation adjustments	(830.4)	(818.0)	(177.7)
Unrealized gain (loss) on derivative instruments	0.0	0.0	0.0
Reclassification of derivative (gain) loss to income	0.0	0.0	0.0
Pension and other postretirement benefit adjustments	0.0	0.0	0.0
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	0.0	0.0	0.0
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	0.0	0.0	0.0
Tax adjustment related to investment in MillerCoors reclassification			0.0
Tax benefit (expense)	(69.3)	(31.3)	(30.7)
Balance	(769.9)	129.8	979.1
Gain (loss) on derivative instruments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	15.0	14.6	(17.7)
Foreign currency translation adjustments	(16.0)	(8.9)	0.0
Unrealized gain (loss) on derivative instruments	23.0	3.8	58.6
Reclassification of derivative (gain) loss to income	(7.1)	3.8	(5.5)
Pension and other postretirement benefit adjustments	0.0	0.0	0.0
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	0.0	0.0	0.0
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	0.0	0.0	0.0
Tax adjustment related to investment in MillerCoors reclassification			0.0
Tax benefit (expense)	(0.4)	1.7	(20.8)
Balance	14.5	15.0	14.6
Pension and Postretirement Benefit adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	(658.5)	(556.3)	(844.1)
Foreign currency translation adjustments	(1.7)	8.4	0.7
Unrealized gain (loss) on derivative instruments	0.0	0.0	0.0
Reclassification of derivative (gain) loss to income	0.0	0.0	0.0
Pension and other postretirement benefit adjustments	42.0	(172.3)	278.0
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	46.9	33.0	53.7
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	0.0	0.0	0.0
Tax adjustment related to investment in MillerCoors reclassification			0.0
Tax benefit (expense)	(17.8)	28.7	(44.6)
Balance	(589.1)	(658.5)	(556.3)
Equity Method Investments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	(384.7)	(282.5)	(398.0)
Foreign currency translation adjustments	0.0	0.0	0.0
Unrealized gain (loss) on derivative instruments	0.0	0.0	0.0
Reclassification of derivative (gain) loss to income	0.0	0.0	0.0
Pension and other postretirement benefit adjustments	0.0	0.0	0.0
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	0.0	0.0	0.0
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	56.5	(157.5)	114.5
Tax adjustment related to investment in MillerCoors reclassification			34.3
Tax benefit (expense)	(22.2)	55.3	(33.3)
Balance	(350.4)	(384.7)	(282.5)
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	(898.4)	154.9	(72.3)
Foreign currency translation adjustments	(848.1)	(818.5)	(177.0)
Unrealized gain (loss) on derivative instruments	23.0	3.8	58.6
Reclassification of derivative (gain) loss to income	(7.1)	3.8	(5.5)
Pension and other postretirement benefit adjustments	42.0	(172.3)	278.0
Amortization of net prior service (benefit) cost and net actuarial (gain) loss to income	46.9	33.0	53.7
Ownership share of unconsolidated subsidiaries' other comprehensive income (loss)	56.5	(157.5)	114.5
Tax adjustment related to investment in MillerCoors reclassification			34.3
Tax benefit (expense)	(109.7)	54.4	(129.4)
Balance	$ (1,694.9)	$ (898.4)	$ 154.9

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Equity Method Investment, Increase (Decrease) due to Reclassification

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This element represents the company's share in the other comprehensive income (loss), before tax, for the period, pertaining to its consolidated subsidiaries.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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