Accumulated Other Comprehensive Income (Loss) (Changes in OCI) (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 25, 2015	Sep. 26, 2014
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss	[1]	$ 2.6	$ (3.4)
Other comprehensive income (loss), before reclassifications	[1]	10.5	12.4
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	(27.6)	1.7
Net current period other comprehensive income (loss)	[1]	(17.1)	14.1
Accumulated other comprehensive loss	[1]	(14.5)	10.7
Translation adjustments		(1.1)	0.0
Changes in Fair Value of Effective Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss	[1]	25.2	(3.1)
Other comprehensive income (loss), before reclassifications	[1]	21.3	19.6
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	(28.8)	0.8
Net current period other comprehensive income (loss)	[1]	(7.5)	20.4
Accumulated other comprehensive loss	[1]	17.7	17.3
Foreign Currency Translation Adjustment [Member]
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss	[1]	(0.8)	12.0
Other comprehensive income (loss), before reclassifications	[1],[2]	(10.6)	(7.0)
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	0.0	0.0
Net current period other comprehensive income (loss)	[1]	(10.6)	(7.0)
Accumulated other comprehensive loss	[1]	(11.4)	5.0
Foreign currency transaction and translation loss		3.1	2.3
Retirement Benefit Adjustment [Member]
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss	[1]	(21.8)	(12.3)
Other comprehensive income (loss), before reclassifications	[1],[3]	(0.2)	(0.2)
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	1.2	0.9
Net current period other comprehensive income (loss)	[1]	1.0	0.7
Accumulated other comprehensive loss	[1]	(20.8)	(11.6)
Other comprehensive income (loss) before reclassifications		$ 0.1	$ 0.2

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

[2] Includes a loss of $3.1 million for the nine months ended September 25, 2015 and a loss of $2.3 million for the nine months ended September 26, 2014 on intra-entity foreign currency transactions that are of a long-term-investment nature; also includes a loss of $1.1 million for the nine months ended September 25, 2015 related to noncontrolling interest.

[3] Includes a loss of $0.1 million for the nine months ended September 25, 2015 and a loss of $0.2 million for the nine months ended September 26, 2014 related to noncontrolling interest for Retirement Benefit adjustments