Condensed Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common equities	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock
Beginning Balance at Dec. 31, 2014		$ 397	$ 1,214	$ 4,505	$ 1,744	$ (1,287)
Share-based awards		0	(11)			23
Share-based compensation			11
Other			2			2
Net Income	$ 304			304
Dividends declared				(151)
Other comprehensive income	(230)				(230)
Shares acquired - share repurchase authorization						(20)
Shares acquired - share-based compensation plans						(6)
Ending Balance at Jun. 30, 2015	6,497	$ 397	1,216	4,658	1,514	(1,288)
Beginning Balance (in shares) at Dec. 31, 2014		163.7
Share-based awards (in shares)		0.8
Shares acquired - share repurchase authorization (in shares)		(0.4)
Shares acquired - share-based compensation plans (in shares)		(0.1)
Other (in shares)		0.0
Ending Balance (in shares) at Jun. 30, 2015		164.0
Beginning Balance at Dec. 31, 2015	6,427	$ 397	1,232	4,762	1,344	(1,308)
Share-based awards		0	(10)			23
Share-based compensation			13
Other			2			2
Net Income	311			311
Dividends declared				(158)
Other comprehensive income	370				370
Shares acquired - share repurchase authorization						(2)
Shares acquired - share-based compensation plans						(7)
Ending Balance at Jun. 30, 2016	$ 6,971	$ 397	$ 1,237	$ 4,915	$ 1,714	$ (1,292)
Beginning Balance (in shares) at Dec. 31, 2015	198.3	163.9
Share-based awards (in shares)		0.7
Shares acquired - share repurchase authorization (in shares)		0.0
Shares acquired - share-based compensation plans (in shares)		(0.1)
Other (in shares)		0.0
Ending Balance (in shares) at Jun. 30, 2016	198.3	164.5