Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Mar. 28, 2016
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	$ (1,015.4)	$ (618.2)
Other comprehensive income (loss) before reclassifications	(81.8)	(370.0)
Amounts reclassified from accumulated other comprehensive income (loss)	7.5	6.6
Other comprehensive income (loss)	(74.3)	(363.4)
September 30	(1,089.7)	(981.6)
Accumulated other comprehensive income (loss), net of tax	(1,015.4)	(618.2)
Forward-Starting Interest Rate Swap
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	(3.3)	0.0
Other comprehensive income (loss) before reclassifications	(28.5)	(9.2)
Amounts reclassified from accumulated other comprehensive income (loss)	1.5	0.0
Other comprehensive income (loss)	(27.0)	(9.2)
September 30	(30.3)	(9.2)
Accumulated other comprehensive income (loss), before tax			$ (54.5)
Accumulated other comprehensive income (loss), net of tax	(3.3)	0.0	$ (31.8)
Forward-Starting Interest Rate Swap | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Abstract]
Amortization of loss on cash flow hedge: Interest expense	2.6	0.0
Amortization of loss on cash flow hedge: Income taxes	1.1	0.0
Amortization of loss on cash flow hedge: Interest expense, net of income tax	1.5	0.0
Unrealized Loss on Available-for-Sale Securities
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	(0.9)	(1.2)
Other comprehensive income (loss) before reclassifications	0.1	0.3
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0
Other comprehensive income (loss)	0.1	0.3
September 30	(0.8)	(0.9)
Accumulated other comprehensive income (loss), net of tax	(0.9)	(1.2)
Defined Benefit Pension and Postemployment Plans
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	(87.9)	(92.1)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss)	6.0	6.6
Other comprehensive income (loss)	6.0	6.6
September 30	(81.9)	(85.5)
Accumulated other comprehensive income (loss), net of tax	(87.9)	(92.1)
Defined Benefit Pension and Postemployment Plans | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Abstract]
Amortization of defined benefit pension and postemployment plans: Prior service cost	5.5	5.5
Amortization of defined benefit pension and postemployment plans: Actuarial (gains) losses	4.4	5.5
Amortization of defined benefit pension and postemployment plans: Net periodic benefit cost (see Note 8)	9.9	11.0
Amortization of defined benefit pension and postemployment plans: Income taxes	3.9	4.4
Amortization of defined benefit pension and postemployment plans: Periodic benefit cost, net of income tax	6.0	6.6
Foreign Currency Translation
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
January 1	(923.3)	(524.9)
Other comprehensive income (loss) before reclassifications	(53.4)	(361.1)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0
Other comprehensive income (loss)	(53.4)	(361.1)
September 30	(976.7)	(886.0)
Accumulated other comprehensive income (loss), net of tax	$ (923.3)	$ (524.9)