Special items Summary Special Items (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended	3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended			9 Months Ended		3 Months Ended				9 Months Ended				3 Months Ended		9 Months Ended		3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended				9 Months Ended				3 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013 Employees	Sep. 29, 2012	Dec. 26, 2009	Sep. 28, 2013 Canada [Member] Restructuring		Sep. 29, 2012 Canada [Member] Restructuring		Sep. 28, 2013 Canada [Member] Restructuring		Sep. 29, 2012 Canada [Member] Restructuring		Sep. 28, 2013 Canada [Member] Special termination benefits		Sep. 29, 2012 Canada [Member] Special termination benefits		Sep. 28, 2013 Canada [Member] Special termination benefits		Sep. 29, 2012 Canada [Member] Special termination benefits		Sep. 28, 2013 Canada [Member] Flood insurance loss (reimbursement)		Sep. 29, 2012 Canada [Member] Flood insurance loss (reimbursement)		Sep. 28, 2013 Canada [Member] Flood insurance loss (reimbursement)		Sep. 29, 2012 Canada [Member] Flood insurance loss (reimbursement)		Sep. 28, 2013 Europe [Member] Restructuring		Sep. 29, 2012 Europe [Member] Restructuring		Sep. 28, 2013 Europe [Member] Restructuring		Sep. 29, 2012 Europe [Member] Restructuring		Sep. 28, 2013 Europe [Member] Asset abandonment		Sep. 29, 2012 Europe [Member] Asset abandonment		Sep. 28, 2013 Europe [Member] Asset abandonment		Sep. 29, 2012 Europe [Member] Asset abandonment		Sep. 28, 2013 Europe [Member] Flood insurance loss (reimbursement)		Jun. 29, 2013 Europe [Member] Flood insurance loss (reimbursement)	Sep. 28, 2013 Europe [Member] Flood insurance loss (reimbursement)		Sep. 28, 2013 Europe [Member] Release of non-income-related tax reserve		Sep. 29, 2012 Europe [Member] Release of non-income-related tax reserve		Sep. 28, 2013 Europe [Member] Release of non-income-related tax reserve		Sep. 29, 2012 Europe [Member] Release of non-income-related tax reserve		Sep. 28, 2013 Europe [Member] Impairment of Intangible Assets [Member]		Sep. 28, 2013 Europe [Member] Impairment of Intangible Assets [Member]		Sep. 28, 2013 MCI Restructuring		Sep. 29, 2012 MCI Restructuring		Sep. 28, 2013 MCI Restructuring		Sep. 29, 2012 MCI Restructuring		Sep. 28, 2013 MCI China impairments and related costs		Sep. 29, 2012 MCI China impairments and related costs		Sep. 28, 2013 MCI China impairments and related costs		Sep. 29, 2012 MCI China impairments and related costs		Sep. 28, 2013 Corporate Restructuring		Sep. 29, 2012 Corporate Restructuring		Sep. 28, 2013 Corporate Restructuring		Sep. 29, 2012 Corporate Restructuring		Sep. 29, 2012 MC Si Hai [Member]	Jun. 30, 2012 MC Si Hai [Member]
Restructuring Cost and Reserve [Line Items]
Total special items	$ 163.0	$ 35.9	$ 165.8	$ 58.6		$ 1.6	[1]	$ 2.5	[1]	$ 3.0	[1]	$ 4.1	[1]	$ 0.3	[2]	$ 0.3	[2]	$ 1.7	[2]	$ 2.2	[2]	$ 0	[3]	$ 0.9	[3]	$ 0	[3]	$ (1.4)	[3]	$ 7.3	[1]	$ 2.5	[1]	$ 10.3	[1]	$ 8.8	[1]	$ 0	[4]	$ 0	[4]	$ 0	[4]	$ 7.2	[4]	$ 2.6	[5]		$ 2.6	[5]	$ 0	[6]	$ 0	[6]	$ (4.2)	[6]	$ (3.5)	[6]	$ 150.9	[7]	$ 150.9	[7]	$ 0	[1]	$ 1.2	[1]	$ 0.1	[1]	$ 1.2	[1]	$ 0.3	[8]	$ 28.5	[8]	$ 1.1	[8]	$ 38.9	[8]	$ 0	[1]	$ 0	[1]	$ 0.3	[1]	$ 1.1	[1]
Restructuring, Settlement and Impairment Provisions-Loss																																																	5.9
Restructuring, Settlement and Impairment Provisions - Gain																																																(3.3)
Restructuring Related Reduction in Employees			740
Non-income-related Tax Reserves					10.4
Goodwill, Impairment Loss																																																																																							27.6	9.5
Deconsolidation, Related Costs																																																																																							$ 0.9

[1] During 2013 and 2012, we recognized expenses associated with restructuring programs focused on labor savings and organizational effectiveness across all functions. As a result, we have reduced headcount by approximately 740 employees since the start of 2012.

[2] During the third quarter and first three quarters of 2013 and 2012, we recognized charges related to special termination benefits as eligible employees elected early retirement offered as a result of the ratification of collective bargaining agreements with MCC's brewery groups

[3] In the third quarter of 2012, we incurred expenses in excess of insurance proceeds related to flood damage at our Toronto offices. In the first three quarters of 2012, we received insurance proceeds in excess of expenses incurred related to these damages.

[4] During the second quarter of 2012, we recognized an asset abandonment charge related to the discontinuation of primary packaging in the U.K. We determined that our Home Draft package was not meeting expectations driven by a lack of demand in the U.K. market and as a result, we recognized a loss related to the write-off of the Home Draft packaging line, tooling equipment and packaging materials inventory.

[5] During the third quarter and first three quarters of 2013, we recorded losses and related costs of $2.6 million and $5.9 million, respectively, in our Europe business related to significant flooding in Czech Republic in the second quarter of 2013. These losses were offset by $3.3 million insurance proceeds received in the second quarter of 2013.

[6] During 2009, we established a non-income-related tax reserve of $10.4 million that was recorded as a special item. The amounts recorded in 2013 and 2012 represent the release of this reserve as a result of a change in estimate. As a result, the remaining amount of this non-income-related tax reserve was fully released in the first quarter of 2013.

[7] During the third quarter of 2013, we recognized impairment charges related to indefinite-lived intangible assets in Europe. See Note 11, "Goodwill and Intangible Assets" for further discussion.

[8] In the second quarter of 2012, we recognized impairment charges related to goodwill and definite-lived intangible assets in our joint venture in China. See Note 11, "Goodwill and Intangible Assets" for further discussion. In the third quarter of 2012, we deconsolidated our MC Si'hai joint venture in China due to a loss of our ability to control the joint venture and recognized an impairment loss of $27.6 million upon deconsolidation and $0.9 million of related costs.