Earnings Per Share Basic and Diluted (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 24, 2011	Jun. 25, 2011	Mar. 26, 2011	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Net income (loss) from continuing operations	$ 60.1	$ 197.7	$ 104.3	$ 79.4	$ 172.4	$ 194.7	$ 224.3	$ 82.6	$ 441.5	$ 674.0	$ 668.1
Income (loss) from discontinued operations, net of tax	(0.1)	0.7	0.8	0.1	0.8	2.7	(1.5)	0.3	1.5	2.3	39.6
Net income (loss) attributable to MCBC	$ 60.0	$ 198.4	$ 105.1	$ 79.5	$ 173.2	$ 197.4	$ 222.8	$ 82.9	$ 443.0	$ 676.3	$ 707.7
Weighted-average shares for basic EPS									180.8	184.9	185.9
Effect of dilutive securities:
Weighted-average shares for diluted EPS									181.8	186.4	187.3
Basic net income (loss) per share:
Continuing operations attributable to MCBC	$ 0.33	$ 1.09	$ 0.58	$ 0.44	$ 0.95	$ 1.05	$ 1.20	$ 0.44	$ 2.44	$ 3.65	$ 3.59
Discontinued operations attributable to MCBC	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.01	$ (0.01)	$ 0.00	$ 0.01	$ 0.01	$ 0.21
Basic net income (loss) attributable to MCBC	$ 0.33	$ 1.09	$ 0.58	$ 0.44	$ 0.95	$ 1.06	$ 1.19	$ 0.44	$ 2.45	$ 3.66	$ 3.80
Diluted net income (loss) per share:
Continuing operations attributable to MCBC	$ 0.33	$ 1.09	$ 0.57	$ 0.44	$ 0.95	$ 1.05	$ 1.19	$ 0.44	$ 2.43	$ 3.62	$ 3.57
Discontinued operations attributable to MCBC	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 0.01	$ (0.01)	$ 0.00	$ 0.01	$ 0.01	$ 0.21
Diluted net income (loss) attributable to MCBC	$ 0.33	$ 1.09	$ 0.57	$ 0.44	$ 0.95	$ 1.06	$ 1.18	$ 0.44	$ 2.44	$ 3.63	$ 3.78
Dividends declared and paid per share (in dollars per share)									$ 1.28	$ 1.24	$ 1.08
Options and SOSARs
Effect of dilutive securities:
Incremental common shares attributable to share-based compensation arrangements									0.5	0.9	0.9
RSU PU DSU
Effect of dilutive securities:
Incremental common shares attributable to share-based compensation arrangements									0.5	0.6	0.5