Investments (Schedule Of Investments) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Investments [Abstract]
Equity method investments	[1]	$ 1,143		$ 1,048
Time deposits		260		255
Available for sale debt instruments		451		491
Equity and other investments		46		44
Restricted Cash and Cash Equivalents	[2]	176	$ 70	176
Total		2,076		$ 2,014
Dividends received		$ 63	$ 88

[1] Dividends received were $63 and $88 for the three months ended March 31, 2019 and 2018.

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