Fair Value Measurements, Assets and Liabilities (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Mar. 30, 2019	Dec. 31, 2018
Assets [Abstract]
Cash equivalents	$ 77	$ 769
Bank time deposits	2	2
Investments in common stock, mutual funds and other similar instruments	19	10
Warrants	6	8
Insurance contracts	120	113
Derivative contracts	75	31
Total Assets	299	933
Liabilities [Abstract]
Derivative contracts	103	145
Contingent consideration	37	37
Total Liabilities	140	182
Quoted Prices in Active Markets (Level I) [Member]
Assets [Abstract]
Cash equivalents	77	769
Bank time deposits	2	2
Investments in common stock, mutual funds and other similar instruments	19	10
Total Assets	98	781
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Warrants	6	8
Insurance contracts	120	113
Derivative contracts	75	31
Total Assets	201	152
Liabilities [Abstract]
Derivative contracts	103	145
Total Liabilities	103	145
Significant Unobservable Inputs (Level 3) [Member]
Liabilities [Abstract]
Contingent consideration	37	37
Total Liabilities	$ 37	$ 37