v2.4.0.8

Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator for earnings (loss) per share, basic
Income (loss) from continuing operations attributable to controlling interest	$ 317	$ (304)	$ 638	$ (158)
Undistributed earnings allocable to participating securities	(3)		(6)
Income (loss) from continuing operations available to shareholders	314	(304)	632	(158)
Denominator for earnings (loss) per share, basic
Weighted-average shares outstanding	360	353	360	352
Weighted-average shares for per share calculation, basic	360	353	360	352
Per share earnings (loss) from continuing operations, basic	$ 0.87	$ (0.86)	$ 1.76	$ (0.45)
Numerator for earnings (loss) per share, diluted
Income (loss) from continuing operations attributable to controlling interest	317	(304)	638	(158)
Undistributed earnings allocable to participating securities	(3)		(6)
Income (loss) from continuing operations available to shareholders	$ 314	$ (304)	$ 632	$ (158)
Denominator for earnings (loss) per share, diluted
Weighted-average shares outstanding	360	353	360	352
Weighted-average shares for per share calculation, diluted	360	353	360	352
Per share earnings (loss) from continuing operations, diluted	$ 0.87	$ (0.86)	$ 1.76	$ (0.45)
Share-based awards
Anti-dilutive securities
Share-based awards excluded from earnings per share calculation (in shares)	2.4	2.2	2.3	2.0

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