Investments (Schedule Of Investments) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Investments [Abstract]
Time deposits		$ 148		$ 456
Pledged money market funds	[1]	38		38
Available-for-sale investments		264		244
Equity method investments	[2]	1,247		1,230
Restricted cash	[3]	31		31
Other investments		35		35
Total		1,763		$ 2,034
Dividends received		$ 49	$ 79

[1] Reflects amounts pledged in lieu of letters of credit as collateral in support of our workers’ compensation programs. These funds can become available within 30 days notice upon issuance of letters of credit.

[2] Dividends received were $49 and $79 for the three months ended March 31, 2016 and 2015.

[3] Restricted to pay certain claims related to workers' compensation and life insurance premiums for certain employees.