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Consolidated Statement Of Changes In Shareholders' Equity (USD $)
In Millions, except Share data
Total
Common Stock [Member]
Additional Paid In Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Treasury Stock [Member]
Parent [Member]
Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2012 $ 3,194 $ 277 $ 3,076 $ 2,039 $ 56 $ (2,275) $ 3,173 $ 21
Beginning Balance (in shares) at Dec. 31, 2012   277,405,039       (81,733,530)   1,315
Net income (loss) (14)     (14) 0   (14)  
Other comprehensive income (loss) (142)     0 (142)   (142)  
Share-based compensation, net of tax of $5 (In Shares)   399,673       (3,103,813)   0
Share-based compensation, net of tax of $5 (1) 1 32 0 0 (34) (1) 0
Change in noncontrolling interest in subsidiary 0     0 0   0 0
Ending Balance at Jun. 30, 2013 $ 3,037 $ 278 $ 3,108 $ 2,025 $ (86) $ (2,309) $ 3,016 $ 21
Ending Balance (in shares) at Jun. 30, 2013   277,804,712       (84,837,343)   1,315