Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on (Loss) Derivatives [Line Items]
Balance at December 31, 2016			$ (81.8)
OCI before reclassifications			208.9
Amounts reclassified from AOCI			3.4
Other comprehensive income (loss), net of tax	$ 156.8	$ (106.8)	212.3	$ 46.0
Balance at July 1, 2017	130.5		130.5
Foreign currency translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on (Loss) Derivatives [Line Items]
Balance at December 31, 2016			(67.9)
OCI before reclassifications			220.1
Amounts reclassified from AOCI			0.0
Other comprehensive income (loss), net of tax			220.1
Balance at July 1, 2017	152.2		152.2
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, 2016			(19.5)
OCI before reclassifications			3.5
Amounts reclassified from AOCI			5.0
Other comprehensive income (loss), net of tax			8.5
Balance at July 1, 2017	(11.0)		(11.0)
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, 2016			15.1
OCI before reclassifications			(14.7)
Amounts reclassified from AOCI			(1.6)
Other comprehensive income (loss), net of tax			(16.3)
Balance at July 1, 2017	(1.2)		(1.2)
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, 2016			(9.5)
OCI before reclassifications			0.0
Amounts reclassified from AOCI			0.0
Other comprehensive income (loss), net of tax			0.0
Balance at July 1, 2017	$ (9.5)		$ (9.5)