Accumulated Other Comprehensive Income (Loss) (Changes in OCI) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 27, 2014		Jun. 28, 2013	Jun. 27, 2014		Jun. 28, 2013	Dec. 27, 2013
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss	$ (1.0)	[1]		$ (1.0)	[1]		$ (3.4)	[1]
Other comprehensive income (loss) before reclassifications				0.4	[1]
Amounts reclassified from accumulated other comprehensive income (loss)				2.0	[1]
Net current period other comprehensive income (loss)				2.4	[1]
Translation adjustments				0.4		(0.8)
Net unrealized foreign currency translation gain (loss)	2.9		(2.9)	2.3		(12.1)
Changes in Fair Value of Effective Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss	(3.5)	[1]		(3.5)	[1]		(3.1)	[1]
Other comprehensive income (loss) before reclassifications				(1.8)
Amounts reclassified from accumulated other comprehensive income (loss)				1.4
Net current period other comprehensive income (loss)				(0.4)
Foreign Currency Translation Adjustment [Member]
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss	13.9	[1]		13.9	[1]		12.0	[1]
Other comprehensive income (loss) before reclassifications				1.9
Amounts reclassified from accumulated other comprehensive income (loss)				0	[1]
Net current period other comprehensive income (loss)				1.9
Loss on intra-entity foreign currency translations				0.3
Translation adjustments				0.4
Retirement Benefit Adjustment [Member]
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss	(11.4)	[1]		(11.4)	[1]		(12.3)	[1]
Other comprehensive income (loss) before reclassifications				0.3	[1]
Amounts reclassified from accumulated other comprehensive income (loss)				0.6	[1]
Net current period other comprehensive income (loss)				$ 0.9

[1] All amounts are net of tax and noncontrolling interest.