Accumulated Other Comprehensive Income (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 14, 2014		Jun. 15, 2013		Jun. 14, 2014		Jun. 15, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning balance	$ (12.1)		$ (91.4)		$ (9.2)		$ (87.5)
Other comprehensive income (loss) before reclassifications	4.6		4.0		0.2		(4.6)
Amounts reclassified from accumulated other comprehensive income (loss)	2.0		7.8		4.3		14.9
Income tax expense (benefit)	(0.8)		(2.8)		(1.6)		(5.2)
Net reclassifications	1.2		5.0		2.7		9.7
Other comprehensive income (loss)	5.8		9.0		2.9		5.1
Accumulated other comprehensive income (loss), Ending Balance	(6.3)		(82.4)		(6.3)		(82.4)
Foreign exchange contracts [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning balance	0.9		(0.9)		(0.8)		(1.7)
Other comprehensive income (loss) before reclassifications	(0.5)		(1.6)		0.8		(0.9)
Amounts reclassified from accumulated other comprehensive income (loss)	0.2	[1]	0.8	[1]	0.8	[1]	0.9	[1]
Income tax expense (benefit)	(0.1)		(0.3)		(0.3)		(0.3)
Net reclassifications	0.1		0.5		0.5		0.6
Other comprehensive income (loss)	(0.4)		(1.1)		1.3		(0.3)
Accumulated other comprehensive income (loss), Ending Balance	0.5		(2.0)		0.5		(2.0)
Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning balance	0.7		(0.7)		0.6		(1.0)
Other comprehensive income (loss) before reclassifications	(0.5)		0.7		(0.4)		1.0
Amounts reclassified from accumulated other comprehensive income (loss)	0		0		0		0
Income tax expense (benefit)	0		0		0		0
Net reclassifications	0		0		0		0
Other comprehensive income (loss)	(0.5)		0.7		(0.4)		1.0
Accumulated other comprehensive income (loss), Ending Balance	0.2		0		0.2		0
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning balance	(5.3)		(3.7)		0.5		5.9
Other comprehensive income (loss) before reclassifications	5.6		4.9		(0.2)		(4.7)
Amounts reclassified from accumulated other comprehensive income (loss)	0		0		0		0
Income tax expense (benefit)	0		0		0		0
Net reclassifications	0		0		0		0
Other comprehensive income (loss)	5.6		4.9		(0.2)		(4.7)
Accumulated other comprehensive income (loss), Ending Balance	0.3		1.2		0.3		1.2
Pension adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning balance	(8.4)		(86.1)		(9.5)		(90.7)
Other comprehensive income (loss) before reclassifications	0		0		0		0
Amounts reclassified from accumulated other comprehensive income (loss)	1.8	[2]	7.0	[2]	3.5	[2]	14.0	[2]
Income tax expense (benefit)	(0.7)		(2.5)		(1.3)		(4.9)
Net reclassifications	1.1		4.5		2.2		9.1
Other comprehensive income (loss)	1.1		4.5		2.2		9.1
Accumulated other comprehensive income (loss), Ending Balance	$ (7.3)		$ (81.6)		$ (7.3)		$ (81.6)

[1] Amounts reclassified are included in cost of goods sold.

[2] Amounts reclassified are included in the computation of net pension expense.