Supplemental Guarantor Information Cash Flows (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by operating activities	$ 818.5	$ 282.4
Cash flows from investing activities:
Additions to properties	(354.0)	(121.6)
Proceeds from sales of properties and other assets	46.1	144.6
Investment in MillerCoors	0.0	(810.6)
Return of capital from MillerCoors	0.0	731.1
Other	6.0	(4.1)
Net cash provided by investing activities	(301.9)	(60.6)
Cash flows from financing activities:
Proceeds from issuance of common stock, net	0.0	2,525.9
Exercise of stock options under equity compensation plans	1.1	5.4
Dividends paid	(176.6)	(176.5)
Debt issuance costs	(4.6)	(15.0)
Payments on debt and borrowings	(2,201.5)	(17.9)
Proceeds on debt and borrowings	1,536.0	31.7
Net proceeds from (payments on) revolving credit facilities and commercial paper	282.0	2.5
Change in overdraft balances and other	(29.6)	(17.5)
Net cash provided by (used in) financing activities	(593.2)	2,338.6
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(76.6)	2,560.4
Effect of foreign exchange rate changes on cash and cash equivalents	18.6	(1.0)
Balance at beginning of year	560.9	430.9
Balance at end of period	502.9	2,990.3
Parent Company [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by operating activities	496.0	185.4
Cash flows from investing activities:
Additions to properties	(10.3)	(10.2)
Proceeds from sales of properties and other assets	0.0	0.0
Investment in MillerCoors		0.0
Return of capital from MillerCoors		0.0
Other	0.0	0.9
Net intercompany investing activity	0.0	(1.1)
Net cash provided by investing activities	(10.3)	(10.4)
Cash flows from financing activities:
Proceeds from issuance of common stock, net		2,525.9
Exercise of stock options under equity compensation plans	1.1	5.4
Dividends paid	(161.8)	(161.1)
Debt issuance costs	(4.6)	(15.0)
Payments on debt and borrowings	(2,200.0)	0.0
Proceeds on debt and borrowings	1,536.0	0.0
Net proceeds from (payments on) revolving credit facilities and commercial paper	280.3	0.0
Change in overdraft balances and other	(12.6)	(14.0)
Net intercompany financing activity	0.0	0.0
Net cash provided by (used in) financing activities	(561.6)	2,341.2
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(75.9)	2,516.2
Effect of foreign exchange rate changes on cash and cash equivalents	0.0	0.0
Balance at beginning of year	147.3	146.4
Balance at end of period	71.4	2,662.6
Subsidiary Guarantors [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by operating activities	471.3	92.8
Cash flows from investing activities:
Additions to properties	(275.3)	(35.9)
Proceeds from sales of properties and other assets	2.2	142.1
Investment in MillerCoors		(810.6)
Return of capital from MillerCoors		731.1
Other	0.0	1.3
Net intercompany investing activity	(70.8)	(39.7)
Net cash provided by investing activities	(343.9)	(11.7)
Cash flows from financing activities:
Proceeds from issuance of common stock, net		0.0
Exercise of stock options under equity compensation plans	0.0	0.0
Dividends paid	(150.5)	(40.3)
Debt issuance costs	0.0	0.0
Payments on debt and borrowings	0.0	0.0
Proceeds on debt and borrowings	0.0	0.0
Net proceeds from (payments on) revolving credit facilities and commercial paper	0.0	0.0
Change in overdraft balances and other	(10.6)	0.0
Net intercompany financing activity	0.0	2.0
Net cash provided by (used in) financing activities	(161.1)	(38.3)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(33.7)	42.8
Effect of foreign exchange rate changes on cash and cash equivalents	1.5	3.9
Balance at beginning of year	141.5	106.2
Balance at end of period	109.3	152.9
Subsidiary Non Guarantors [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by operating activities	111.8	44.5
Cash flows from investing activities:
Additions to properties	(68.4)	(75.5)
Proceeds from sales of properties and other assets	43.9	2.5
Investment in MillerCoors		0.0
Return of capital from MillerCoors		0.0
Other	6.0	(6.3)
Net intercompany investing activity	0.0	(0.9)
Net cash provided by investing activities	(18.5)	(80.2)
Cash flows from financing activities:
Proceeds from issuance of common stock, net		0.0
Exercise of stock options under equity compensation plans	0.0	0.0
Dividends paid	(124.9)	(15.4)
Debt issuance costs	0.0	0.0
Payments on debt and borrowings	(1.5)	(17.9)
Proceeds on debt and borrowings	0.0	31.7
Net proceeds from (payments on) revolving credit facilities and commercial paper	1.7	2.5
Change in overdraft balances and other	(6.4)	(3.5)
Net intercompany financing activity	70.8	39.7
Net cash provided by (used in) financing activities	(60.3)	37.1
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	33.0	1.4
Effect of foreign exchange rate changes on cash and cash equivalents	17.1	(4.9)
Balance at beginning of year	272.1	178.3
Balance at end of period	322.2	174.8
Consolidated [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by operating activities	818.5	282.4
Cash flows from investing activities:
Additions to properties	(354.0)	(121.6)
Proceeds from sales of properties and other assets	46.1	144.6
Investment in MillerCoors		(810.6)
Return of capital from MillerCoors		731.1
Other	6.0	(4.1)
Net intercompany investing activity	0.0	0.0
Net cash provided by investing activities	(301.9)	(60.6)
Cash flows from financing activities:
Proceeds from issuance of common stock, net		2,525.9
Exercise of stock options under equity compensation plans	1.1	5.4
Dividends paid	(176.6)	(176.5)
Debt issuance costs	(4.6)	(15.0)
Payments on debt and borrowings	(2,201.5)	(17.9)
Proceeds on debt and borrowings	1,536.0	31.7
Net proceeds from (payments on) revolving credit facilities and commercial paper	282.0	2.5
Change in overdraft balances and other	(29.6)	(17.5)
Net intercompany financing activity	0.0	0.0
Net cash provided by (used in) financing activities	(593.2)	2,338.6
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	(76.6)	2,560.4
Effect of foreign exchange rate changes on cash and cash equivalents	18.6	(1.0)
Balance at beginning of year	560.9	430.9
Balance at end of period	502.9	2,990.3
Consolidation, Eliminations [Member]
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Net cash provided by operating activities	(260.6)	(40.3)
Cash flows from investing activities:
Additions to properties	0.0	0.0
Proceeds from sales of properties and other assets	0.0	0.0
Investment in MillerCoors		0.0
Return of capital from MillerCoors		0.0
Other	0.0	0.0
Net intercompany investing activity	70.8	41.7
Net cash provided by investing activities	70.8	41.7
Cash flows from financing activities:
Proceeds from issuance of common stock, net		0.0
Exercise of stock options under equity compensation plans	0.0	0.0
Dividends paid	260.6	40.3
Debt issuance costs	0.0	0.0
Payments on debt and borrowings	0.0	0.0
Proceeds on debt and borrowings	0.0	0.0
Net proceeds from (payments on) revolving credit facilities and commercial paper	0.0	0.0
Change in overdraft balances and other	0.0	0.0
Net intercompany financing activity	(70.8)	(41.7)
Net cash provided by (used in) financing activities	189.8	(1.4)
Cash and cash equivalents:
Net increase (decrease) in cash and cash equivalents	0.0	0.0
Effect of foreign exchange rate changes on cash and cash equivalents	0.0	0.0
Balance at beginning of year	0.0	0.0
Balance at end of period	$ 0.0	$ 0.0