Accumulated Other Comprehensive Loss (Reclassifications Out of Accumulated OCI) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
(Gain) loss on cash flow hedges:
(Gain) loss recognized in income on derivatives	$ 492.6	$ 463.9
Income tax impact	18.8	17.6
Total	(82.2)	(75.3)
Amortization of defined benefit pension and postretirement plan items:
Total	1.2	3.1
Cash Flow Hedges and Other
Amortization of defined benefit pension and postretirement plan items:
Total	(2.3)	(1.5)
Prior Service Cost
Amortization of defined benefit pension and postretirement plan items:
Amortization of defined benefit pension and postretirement plan items	(1.5)	(1.5)
Net Actuarial Loss
Amortization of defined benefit pension and postretirement plan items:
Amortization of defined benefit pension and postretirement plan items	6.0	7.6
Pension and Postretirement Benefits
Amortization of defined benefit pension and postretirement plan items:
Amortization of defined benefit pension and postretirement plan items	4.5	6.1
Income tax impact	(1.0)	(1.5)
Total	3.5	4.6
Amount Reclassified from AOCI | Cash Flow Hedges and Other
(Gain) loss on cash flow hedges:
(Gain) loss recognized in income on derivatives	(3.1)	(2.0)
Income tax impact	0.8	0.5
Total	$ (2.3)	$ (1.5)