SCHEDULE II (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 29, 2012		Dec. 31, 2011		Dec. 26, 2009
Allowance for doubtful accounts—trade accounts receivable
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 13.4				$ 10.3		$ 7.4
Additions charged to costs and expenses	7.6		10.3		3.7
Deductions	(7.5)	[1]	(7.6)	[1]	(0.7)	[1]
Foreign exchange impact	0.1		0.4		(0.1)
Balance at end of year	13.6		13.4				7.4
Allowance for doubtful accounts—current trade loans
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	1.6				1.8		2.5
Additions charged to costs and expenses	0.6		0.9		1.6
Deductions	(1.1)	[1]	(1.1)	[1]	(2.4)	[1]
Foreign exchange impact	0		0		0.1
Balance at end of year	1.1		1.6				2.5
Allowance for doubtful accounts—long-term trade loans
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	4.0				4.4		6.6
Additions charged to costs and expenses	1.4		2.2		2.5
Deductions	(2.6)	[1]	(2.8)	[1]	(4.8)	[1]
Foreign exchange impact	0		0.2		0.1
Balance at end of year	2.8		4.0				6.6
Allowance for obsolete supplies
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	7.2				5.9		4.1
Additions charged to costs and expenses	9.3		7.0		2.0
Deductions	(9.8)	[1]	(6.0)	[1]	(0.2)	[1]
Foreign exchange impact	0.1		0.3		0
Balance at end of year	6.8		7.2				4.1
Deferred tax valuation account
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	157.5				29.0		39.0
Additions charged to costs and expenses	29.6		136.6		2.4
Deductions	(88.8)	[1]	(9.2)	[1]	(12.3)	[1]
Foreign exchange impact	(0.6)		1.1		(0.1)
Balance at end of year	$ 97.7		$ 157.5				$ 39.0

[1] Amounts related to write-offs of uncollectible accounts, claims or obsolete inventories and supplies. Amounts related to the deferred tax asset valuation allowance are primarily due to the utilization of capital loss and operating loss carryforwards and re-evaluations of deferred tax assets.