Investments (Schedule Of Investments) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Investments [Abstract]
Equity method investments	[1]	$ 1,242		$ 1,242
Time deposits		446		665
Available-for-sale investments		542		537
Restricted Cash and Cash Equivalents	[2]	74		68
Other investments		30		33
Total		2,334		$ 2,545
Dividends received		$ 96	$ 49

[1] Dividends received were $96 and $49 for the three months ended March 31, 2017 and 2016.

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