CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - 6 months ended Jun. 30, 2015 - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2014	$ 7,233	$ 0	$ (5,762)	$ 9,924	$ 3,374	$ (303)
Balance (in shares) at Dec. 31, 2014		1,151	(429)
Components of comprehensive income:
Net income	606				606
Other comprehensive income (loss)	(242)					(242)
Issuance of common stock pursuant to employee stock options	61			61
Issuance of common stock pursuant to employee stock options (in shares)		5
Issuance of common stock pursuant to restricted stock rights (in shares)		3
Restricted stock surrendered for employees’ tax liability	(24)			(24)
Restricted stock surrendered for employees' tax liability (in shares)		(1)
Tax benefit associated with employee stock awards	22			22
Stock-based compensation expense related to employee stock options and restricted stock rights	45			45
Dividends ($0.23 per common share)	(170)				(170)
Indemnity on tax attributes assumed in connection with the Purchase Transaction (see Note 9)	68		$ 68
Shareholder lawsuit settlement in connection with the Purchase Transaction (see Note 12)	202		67	135
Balance at Jun. 30, 2015	$ 7,801	$ 0	$ (5,627)	$ 10,163	$ 3,810	$ (545)
Balance (in shares) at Jun. 30, 2015	729	1,158	(429)