Consolidated Statements of Shareholders' Equity (unaudited) - USD ($) $ in Millions	Total		Common Stock	Additional Paid in Capital	Accumulated Other Comprehensive Loss	Treasury Stock at Cost	Retained Earnings
Balance at Beginning of Period at Dec. 31, 2014	$ 10,325		$ 4	$ 3,624	$ (90)	$ (671)	$ 7,458
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	(22)		0	0	0	0	(22)
Stock-based Compensation	21		0	21	0	0	0
Dividends	(64)		0	0	0	0	(64)
Issuance of Shares of Common Stock to Public, Net of Offering Costs	1,112		0	1,112	0	0	0
Other	(15)		0	4	(7)	(12)	0
Balance at End of Period at Mar. 31, 2015	11,357		4	4,761	(97)	(683)	7,372
Balance at Beginning of Period at Dec. 31, 2015	10,370		5	6,360	(33)	(688)	4,726
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	(287)	[1]	0	0	0	0	(287)
Stock-based Compensation	19		0	19	0	0	0
Dividends	(41)		0	0	0	0	(41)
Other	(9)		0	(1)	0	(8)	0
Balance at End of Period at Mar. 31, 2016	$ 10,052		$ 5	$ 6,378	$ (33)	$ (696)	$ 4,398

[1] No pro forma adjustments were made for the period as the acquisition is included in the Company's historical results.