CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2013	$ 6,622	$ 0	$ (5,814)	$ 9,682	$ 2,686	$ 68
Balance (in shares) at Dec. 31, 2013		1,132	(429)
Components of comprehensive income (loss):
Net income	497				497
Other comprehensive income (loss)	(24)					(24)
Issuance of common stock pursuant to employee stock options	137			137
Issuance of common stock pursuant to employee stock options (in shares)		11
Issuance of common stock pursuant to restricted stock rights (in shares)		3
Restricted stock surrendered for employees' tax liability	(34)			(34)
Restricted stock surrendered for employees' tax liability (in shares)		(1)
Tax benefit associated with employee stock awards	16			16
Stock-based compensation expense related to employee stock options and restricted stock rights	52			52
Dividends ($0.20 per common share)	(147)				(147)
Indemnity on tax attributes assumed in connection with the Purchase Transaction (see Note 11)	52		52
Balance at Jun. 30, 2014	$ 7,171	$ 0	$ (5,762)	$ 9,853	$ 3,036	$ 44
Balance (in shares) at Jun. 30, 2014	717	1,145	(429)