CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified	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 (loss):
Net income	394				394
Other comprehensive income (loss)	(316)					(316)
Issuance of common stock pursuant to employee stock options	27			27
Issuance of common stock pursuant to employee stock options (in shares)		2
Issuance of common stock pursuant to restricted stock rights (in shares)		3
Restricted stock surrendered for employees' tax liability	(18)			(18)
Restricted stock surrendered for employees' tax liability (in shares)		(1)
Tax benefit associated with employee stock awards	13			13
Stock-based compensation expense related to employee stock options and restricted stock rights	22			22
Dividends ($0.23 per common share)	(170)				(170)
Indemnity on tax attributes assumed in connection with the Purchase Transaction (see Note 9)	53		53
Balance at Mar. 31, 2015	$ 7,238	$ 0	$ (5,709)	$ 9,968	$ 3,598	$ (619)
Balance (in shares) at Mar. 31, 2015	726	1,155	429