Fair Value Measurements, Assets and Liabilities (Details) - Fair Value, Recurring [Member] - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Assets [Abstract]
Cash equivalents	$ 1,280	$ 769
Bank time deposits		2
Investments in common stock, mutual funds and other similar instruments	19	10
Warrants	6	8
Insurance contracts	131	113
Derivative contracts	37	31
Total Assets	1,473	933
Liabilities [Abstract]
Derivative contracts	24	145
Contingent consideration	55	37
Total Liabilities	79	182
Quoted Prices in Active Markets (Level I) [Member]
Assets [Abstract]
Cash equivalents	1,280	769
Bank time deposits		2
Investments in common stock, mutual funds and other similar instruments	19	10
Total Assets	1,299	781
Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Warrants	6	8
Insurance contracts	131	113
Derivative contracts	37	31
Total Assets	174	152
Liabilities [Abstract]
Derivative contracts	24	145
Total Liabilities	24	145
Significant Unobservable Inputs (Level 3) [Member]
Liabilities [Abstract]
Contingent consideration	55	37
Total Liabilities	$ 55	$ 37