Investments (Schedule Of Investments) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Investments Schedule [Abstract]
Time deposits	$ 6,090		$ 3,135
Pledged money market funds	46	[1]	56	[1]
Available-for-sale investments	8		9
Equity method investments	1,164	[2]	1,137	[2]
Restricted cash	33	[3]	25	[3]
Other investments	33		35
Total	7,374		4,397
Equity Method Investments and Joint Ventures [Abstract]
Dividends received from equity method investments	226		341
Undistributed earnings from equity method investments	$ 144

[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 $226 and $341 during 2013 and 2012. Retained earnings at December 31, 2013 include undistributed earnings from our equity method investments of $144.

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