Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Sep. 26, 2015	Oct. 01, 2016	Sep. 26, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income on (Loss) Derivatives [Line Items]
Balance at December 31, 2015			$ (15.5)
OCI before reclassifications			85.5
Amounts reclassified from AOCI			1.5
Other comprehensive income (loss), net of tax	$ 40.2	$ (37.2)	87.0	$ 57.8
Balance at October 1, 2016	71.5		71.5
Foreign currency translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on (Loss) Derivatives [Line Items]
Balance at December 31, 2015			(4.4)
OCI before reclassifications			71.8
Amounts reclassified from AOCI			0.0
Other comprehensive income (loss), net of tax			71.8
Balance at October 1, 2016	67.4		67.4
Fair value of derivative financial instruments, net of tax
Reclassification Adjustment out of Accumulated Other Comprehensive Income on (Loss) Derivatives [Line Items]
Balance at December 31, 2015			(14.2)
OCI before reclassifications			(3.7)
Amounts reclassified from AOCI			0.2
Other comprehensive income (loss), net of tax			(3.5)
Balance at October 1, 2016	(17.7)		(17.7)
Fair value of investment securities, net of tax
Reclassification Adjustment out of Accumulated Other Comprehensive Income on (Loss) Derivatives [Line Items]
Balance at December 31, 2015			6.3
OCI before reclassifications			17.1
Amounts reclassified from AOCI			1.3
Other comprehensive income (loss), net of tax			18.4
Balance at October 1, 2016	24.7		24.7
Post-retirement and pension liability adjustments, net of tax
Reclassification Adjustment out of Accumulated Other Comprehensive Income on (Loss) Derivatives [Line Items]
Balance at December 31, 2015			(3.2)
OCI before reclassifications			0.3
Amounts reclassified from AOCI			0.0
Other comprehensive income (loss), net of tax			0.3
Balance at October 1, 2016	$ (2.9)		$ (2.9)