CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2013	$ 6,622	$ 0	$ 9,682	$ (5,814)	$ 2,686	$ 68
Balance (in shares) at Dec. 31, 2013		1,132		(429)
Components of comprehensive income (loss):
Net income	293				293
Other comprehensive income (loss)	(5)					(5)
Issuance of common stock pursuant to employee stock options	119		119
Issuance of common stock pursuant to employee stock options (in shares)		10
Issuance of common stock pursuant to restricted stock rights (in shares)		2
Restricted stock surrendered for employees' tax liability	(27)		(27)
Restricted stock surrendered for employees' tax liability (in shares)		(1)
Tax benefit associated with employee stock awards	11		11
Stock-based compensation expense related to employee stock options and restricted stock rights	27		27
Dividends ($0.20 per common share)	(147)				(147)
Indemnity on tax attributes assumed in connection with the Purchase Transaction (see Note 10)	31			31
Balance at Mar. 31, 2014	$ 6,924	$ 0	$ 9,812	$ (5,783)	$ 2,832	$ 63
Balance (in shares) at Mar. 31, 2014	715	1,143		(429)