Fair Value Measurements, Assets and Liabilities (Details) - Fair Value, Recurring [Member] - USD ($) $ in Millions	Sep. 26, 2020	Dec. 31, 2019
Assets [Abstract]
Cash equivalents	$ 6,021	$ 1,280
Investments in common stock, mutual funds and other similar instruments	22	19
Warrants	9	6
Insurance contracts	140	131
Derivative contracts	49	37
Total Assets	6,241	1,473
Liabilities [Abstract]
Derivative contracts	68	24
Contingent consideration	44	55
Total Liabilities	112	79
Quoted Prices in Active Markets (Level I) [Member]
Assets [Abstract]
Cash equivalents	6,021	1,280
Investments in common stock, mutual funds and other similar instruments	22	19
Total Assets	6,043	1,299
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Warrants	9	6
Insurance contracts	140	131
Derivative contracts	49	37
Total Assets	198	174
Liabilities [Abstract]
Derivative contracts	68	24
Total Liabilities	68	24
Significant Unobservable Inputs (Level 3) [Member]
Liabilities [Abstract]
Contingent consideration	44	55
Total Liabilities	$ 44	$ 55