General (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 03, 2020	Jan. 01, 2020	Dec. 31, 2019
Net decrease to beginning retained earnings	$ (25,373.5)		$ (24,166.3)
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Operating lease, right-of-use asset	$ 870.0		764.0
Operating lease, liability	$ 894.0		$ 797.0
Adoption of accounting standards
Net decrease to beginning retained earnings		$ 8.0