Condensed Consolidated Statements of Changes in Equity (Unaudited) (USD $) In Millions, except Share data in Thousands	Total	Comprehensive Income	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interests
Beginning Balance at Dec. 31, 2010	$ 6,591	$ 0	$ 6	$ 4,528	$ 6,400	$ 230	$ (4,904)	$ 331
Beginning Balance, shares at Dec. 31, 2010			630,282				(155,236)
Comprehensive Income:
Consolidated net income	446	446	0	0	423	0	0	23
Other comprehensive income (loss), net of taxes:
Unrealized losses resulting from changes in fair value of derivative instruments, net of taxes of $8	(13)	(13)	0	0	0	(13)	0	0
Realized losses on derivative instruments reclassified into earnings, net of taxes of $6	9	9	0	0	0	9	0	0
Unrealized losses on marketable securities, net of taxes of $1	(1)	(1)	0	0	0	(1)	0	0
Foreign currency translation adjustments	36	36	0	0	0	36	0	0
Change in funded status of post-retirement benefit obligations, net of taxes of $1	(2)	(2)	0	0	0	(2)	0	0
Other comprehensive income (loss)	29	29	0	0	0	0	0	0
Comprehensive income	475	475	0	0	0	0	0	0
Cash dividends declared	(323)		0	0	(323)	0	0	0
Equity-based compensation transactions, including dividend equivalents, net of taxes	78		0	17	(1)	0	62	0
Equity-based compensation transactions, including dividend equivalents, net of taxes, shares			0				1,973
Common stock repurchases	(176)		0	0	0	0	(176)
Common stock repurchases, shares			0				(4,694)
Distributions paid to noncontrolling interests	(22)		0	0	0	0	0	(22)
Other	0		0	0	0	0	0	0
Other, shares			0				6
Ending Balance at Jun. 30, 2011	$ 6,623	$ 0	$ 6	$ 4,545	$ 6,499	$ 259	$ (5,018)	$ 332
Ending Balance, shares at Jun. 30, 2011			630,282				(157,951)