Supplemental Guarantor Information Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Condensed financial statements
Other Assets, Noncurrent	$ 850.9	$ 841.5
Current assets:
Cash and cash equivalents	666.1	523.4
Accounts receivable, net	637.8	714.8
Other receivables, net	107.1	105.5
Total inventories, net	681.5	615.9
Other current assets, net	280.0	224.8
Total current assets	2,372.5	2,184.4
Properties, net	4,393.6	4,546.5
Goodwill	7,539.0	7,631.4
Other intangibles, net	13,305.1	13,656.0
Total assets	28,461.1	28,859.8
Accounts payable and other current liabilities	2,558.4	2,767.3
Current liabilities:
Current portion of long-term debt and short-term borrowings	1,445.0	928.2
Total current liabilities	4,003.4	3,695.5
Long-term debt	8,032.1	8,109.5
Pension and postretirement benefits	693.9	716.6
Deferred tax liabilities	2,184.2	2,258.6
Other Liabilities, Noncurrent	601.5	406.5
Total liabilities	15,515.1	15,186.7
MCBC stockholders' equity	12,686.6	13,419.4
Noncontrolling interests	259.4	253.7
Total equity	12,946.0	13,673.1	$ 13,888.1	$ 13,735.8
Total liabilities and equity	28,461.1	28,859.8
Consolidation, Eliminations [Member]
Condensed financial statements
Other Assets, Noncurrent	(58.5)	(78.0)
Current assets:
Cash and cash equivalents	0.0	0.0	0.0	0.0
Accounts receivable, net	0.0	0.0
Other receivables, net	0.0	0.0
Total inventories, net	0.0	0.0
Other current assets, net	0.0	0.0
Intercompany accounts receivable	(554.4)	(299.0)
Total current assets	(554.4)	(299.0)
Properties, net	0.0	0.0
Goodwill	0.0	0.0
Other intangibles, net	0.0	0.0
Net investment in and advances to subsidiaries	(33,222.9)	(34,063.4)
Total assets	(33,835.8)	(34,440.4)
Accounts payable and other current liabilities	0.0	0.0
Current liabilities:
Current portion of long-term debt and short-term borrowings	0.0	0.0
Intercompany accounts payable	(554.4)	(299.0)
Total current liabilities	(554.4)	(299.0)
Long-term debt	0.0	0.0
Pension and postretirement benefits	0.0	0.0
Deferred tax liabilities	(58.5)	(78.0)
Other Liabilities, Noncurrent	0.0	0.0
Intercompany notes payable	(7,145.8)	(65.0)
Total liabilities	(7,758.7)	(442.0)
MCBC stockholders' equity	(33,222.9)	(34,063.4)
Intercompany notes receivable	7,145.8	65.0
Total stockholders' equity	(26,077.1)	(33,998.4)
Noncontrolling interests	0.0	0.0
Total equity	(26,077.1)	(33,998.4)
Total liabilities and equity	(33,835.8)	(34,440.4)
Parent Company [Member]
Condensed financial statements
Other Assets, Noncurrent	151.2	137.2
Current assets:
Cash and cash equivalents	297.3	15.7	11.7	515.8
Accounts receivable, net	0.0	0.0
Other receivables, net	16.1	14.4
Total inventories, net	0.0	0.0
Other current assets, net	0.0	3.0
Intercompany accounts receivable	150.6	94.1
Total current assets	464.0	127.2
Properties, net	10.3	19.8
Goodwill	0.0	0.0
Other intangibles, net	3.5	4.0
Net investment in and advances to subsidiaries	20,890.1	21,200.6
Total assets	21,519.1	21,488.8
Accounts payable and other current liabilities	114.7	170.7
Current liabilities:
Current portion of long-term debt and short-term borrowings	1,025.5	499.7
Intercompany accounts payable	123.8	0.0
Total current liabilities	1,264.0	670.4
Long-term debt	7,236.5	7,250.3
Pension and postretirement benefits	7.4	7.2
Deferred tax liabilities	0.0	0.0
Other Liabilities, Noncurrent	325.7	142.6
Intercompany notes payable	0.0	0.0
Total liabilities	8,833.6	8,070.5
MCBC stockholders' equity	12,686.6	13,419.4
Intercompany notes receivable	(1.1)	(1.1)
Total stockholders' equity	12,685.5	13,418.3
Noncontrolling interests	0.0	0.0
Total equity	12,685.5	13,418.3
Total liabilities and equity	21,519.1	21,488.8
Subsidiary Guarantors [Member]
Condensed financial statements
Other Assets, Noncurrent	363.2	364.4
Current assets:
Cash and cash equivalents	98.3	119.6	26.5	156.1
Accounts receivable, net	353.2	396.3
Other receivables, net	59.1	58.4
Total inventories, net	513.2	449.1
Other current assets, net	168.9	126.0
Intercompany accounts receivable	303.5	190.0
Total current assets	1,496.2	1,339.4
Properties, net	3,207.7	3,294.7
Goodwill	6,129.9	6,146.5
Other intangibles, net	11,515.1	11,750.6
Net investment in and advances to subsidiaries	8,104.6	8,364.9
Total assets	30,816.7	31,260.5
Accounts payable and other current liabilities	1,662.8	1,722.0
Current liabilities:
Current portion of long-term debt and short-term borrowings	386.1	415.1
Intercompany accounts payable	201.4	150.7
Total current liabilities	2,250.3	2,287.8
Long-term debt	720.8	779.1
Pension and postretirement benefits	673.1	695.5
Deferred tax liabilities	1,529.3	1,593.3
Other Liabilities, Noncurrent	185.8	172.2
Intercompany notes payable	3,555.7	0.0
Total liabilities	8,915.0	5,527.9
MCBC stockholders' equity	25,490.7	25,796.5
Intercompany notes receivable	(3,589.0)	(63.9)
Total stockholders' equity	21,901.7	25,732.6
Noncontrolling interests	0.0	0.0
Total equity	21,901.7	25,732.6
Total liabilities and equity	30,816.7	31,260.5
Subsidiary Non Guarantors [Member]
Condensed financial statements
Other Assets, Noncurrent	395.0	417.9
Current assets:
Cash and cash equivalents	270.5	388.1	196.2	386.0
Accounts receivable, net	284.6	318.5
Other receivables, net	31.9	32.7
Total inventories, net	168.3	166.8
Other current assets, net	111.1	95.8
Intercompany accounts receivable	100.3	14.9
Total current assets	966.7	1,016.8
Properties, net	1,175.6	1,232.0
Goodwill	1,409.1	1,484.9
Other intangibles, net	1,786.5	1,901.4
Net investment in and advances to subsidiaries	4,228.2	4,497.9
Total assets	9,961.1	10,550.9
Accounts payable and other current liabilities	780.9	874.6
Current liabilities:
Current portion of long-term debt and short-term borrowings	33.4	13.4
Intercompany accounts payable	229.2	148.3
Total current liabilities	1,043.5	1,036.3
Long-term debt	74.8	80.1
Pension and postretirement benefits	13.4	13.9
Deferred tax liabilities	713.4	743.3
Other Liabilities, Noncurrent	90.0	91.7
Intercompany notes payable	3,590.1	65.0
Total liabilities	5,525.2	2,030.3
MCBC stockholders' equity	7,732.2	8,266.9
Intercompany notes receivable	(3,555.7)	0.0
Total stockholders' equity	4,176.5	8,266.9
Noncontrolling interests	259.4	253.7
Total equity	4,435.9	8,520.6
Total liabilities and equity	9,961.1	10,550.9
Consolidated [Member]
Condensed financial statements
Other Assets, Noncurrent	850.9	841.5
Current assets:
Cash and cash equivalents	666.1	523.4	$ 234.4	$ 1,057.9
Accounts receivable, net	637.8	714.8
Other receivables, net	107.1	105.5
Total inventories, net	681.5	615.9
Other current assets, net	280.0	224.8
Intercompany accounts receivable	0.0	0.0
Total current assets	2,372.5	2,184.4
Properties, net	4,393.6	4,546.5
Goodwill	7,539.0	7,631.4
Other intangibles, net	13,305.1	13,656.0
Net investment in and advances to subsidiaries	0.0	0.0
Total assets	28,461.1	28,859.8
Accounts payable and other current liabilities	2,558.4	2,767.3
Current liabilities:
Current portion of long-term debt and short-term borrowings	1,445.0	928.2
Intercompany accounts payable	0.0	0.0
Total current liabilities	4,003.4	3,695.5
Long-term debt	8,032.1	8,109.5
Pension and postretirement benefits	693.9	716.6
Deferred tax liabilities	2,184.2	2,258.6
Other Liabilities, Noncurrent	601.5	406.5
Intercompany notes payable	0.0	0.0
Total liabilities	15,515.1	15,186.7
MCBC stockholders' equity	12,686.6	13,419.4
Intercompany notes receivable	0.0	0.0
Total stockholders' equity	12,686.6	13,419.4
Noncontrolling interests	259.4	253.7
Total equity	12,946.0	13,673.1
Total liabilities and equity	$ 28,461.1	$ 28,859.8