Investments (Schedule Of Investments) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020		Mar. 31, 2019	Dec. 31, 2019
Investments [Abstract]
Equity method investments	[1]	$ 1,062			$ 1,031
Time deposits		173			50
Available for sale debt instruments	[2]	226			405
Equity and other investments		67			65
Restricted Cash and Cash Equivalents		84	[2]	$ 176	86
Total		1,612			$ 1,637
Dividends received		$ 33		$ 63

[1] ⁽¹⁾  Dividends received were $33 and $63 for the three months ended March 31, 2020 and 2019.

[2] ⁽²⁾  Reflects amounts restricted in support of our workers’ compensation programs, employee benefit programs, and insurance premiums.