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	(9)			29
Share-based compensation			16
Other			2			4
Net Income	$ 478			478
Dividends declared				(227)
Other comprehensive income	(464)				(464)
Shares acquired - share repurchase authorization						(41)
Shares acquired - share-based compensation plans						(11)
Ending Balance at Sep. 30, 2015	6,350	$ 397	1,223	4,756	1,280	(1,306)
Beginning Balance (in shares) at Dec. 31, 2014		163.7
Share-based awards (in shares)		1.0
Shares acquired - share repurchase authorization (in shares)		(0.8)
Shares acquired - share-based compensation plans (in shares)		(0.2)
Other (in shares)		0.1
Ending Balance (in shares) at Sep. 30, 2015		163.8
Beginning Balance at Dec. 31, 2015	6,427	$ 397	1,232	4,762	1,344	(1,308)
Share-based awards		0	(9)			29
Share-based compensation			18
Other			3			3
Net Income	491			491
Dividends declared				(237)
Other comprehensive income	408				408
Shares acquired - share repurchase authorization						(2)
Shares acquired - share-based compensation plans						(10)
Ending Balance at Sep. 30, 2016	$ 7,121	$ 397	$ 1,244	$ 5,016	$ 1,752	$ (1,288)
Beginning Balance (in shares) at Dec. 31, 2015	198.3	163.9
Share-based awards (in shares)		0.8
Shares acquired - share repurchase authorization (in shares)		0.0
Shares acquired - share-based compensation plans (in shares)		(0.1)
Other (in shares)		0.1
Ending Balance (in shares) at Sep. 30, 2016	198.3	164.7