CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions		Total	Manager	Independent Directors	Special Stock	Common Stock		Common Stock Manager	Common Stock Independent Directors	Additional Paid In Capital	Additional Paid In Capital Manager	Additional Paid In Capital Independent Directors	Accumulated Other Comprehensive Loss	Retained Earnings	Total Stockholders’ Equity	Total Stockholders’ Equity Manager	Total Stockholders’ Equity Independent Directors	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2017					100	84,733,957	[1]
Beginning balance at Dec. 31, 2017		$ 3,350								$ 1,840			$ (30)	$ 1,343	$ 3,153			$ 197	[2]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares (in shares)	[1]					1,916		805,194	9,435
Issuance of shares		0	$ 37	$ 1							$ 37	$ 1				$ 37	$ 1
Issuance of shares pursuant to conversion of convertible senior notes (in shares)	[1]					74
Issuance of shares pursuant to conversion of convertible senior notes		0
Dividends to common stockholders	[3]	(293)								(293)					(293)
Distributions to noncontrolling interests		(3)																(3)	[2]
Contributions from noncontrolling interests		1																1	[2]
Comprehensive (loss) income, net of taxes		103											(2)	137	135			(32)	[2]
Ending balance (in shares) at Sep. 30, 2018					100	85,550,576	[1]
Ending balance at Sep. 30, 2018		3,196								1,585			(32)	1,480	3,033			163	[2]
Beginning balance (in shares) at Jun. 30, 2018					100	85,186,385	[1]
Beginning balance at Jun. 30, 2018		3,244								1,656			(33)	1,458	3,081			163	[2]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares (in shares)	[1]							364,191
Issuance of shares			15								15					15
Dividends to common stockholders	[3]	(86)								(86)					(86)
Distributions to noncontrolling interests		(1)																(1)	[2]
Contributions from noncontrolling interests		1																1	[2]
Comprehensive (loss) income, net of taxes		23											1	22	23
Ending balance (in shares) at Sep. 30, 2018					100	85,550,576	[1]
Ending balance at Sep. 30, 2018		3,196								1,585			(32)	1,480	3,033			163	[2]
Beginning balance (in shares) at Dec. 31, 2018					100	85,800,303	[1]
Beginning balance at Dec. 31, 2018		3,117								1,510			(30)	1,485	2,965			152
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares (in shares)	[1]							570,767	23,646
Issuance of shares			23	$ 1							23	$ 1				23	$ 1
Dividends to common stockholders	[3]	(258)								(258)					(258)
Distributions to noncontrolling interests		(3)																(3)
Deconsolidation of noncontrolling interests		(137)																(137)
Comprehensive (loss) income, net of taxes		140											1	142	143			(3)
Ending balance (in shares) at Sep. 30, 2019					100	86,394,716	[1]
Ending balance at Sep. 30, 2019		2,883								1,276			(29)	1,627	2,874			9
Beginning balance (in shares) at Jun. 30, 2019					100	86,195,946	[1]
Beginning balance at Jun. 30, 2019		3,038								1,354			(28)	1,566	2,892			146
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares (in shares)	[1]							198,770
Issuance of shares			$ 8								$ 8					$ 8
Dividends to common stockholders	[3]	(86)								(86)					(86)
Deconsolidation of noncontrolling interests		(137)																(137)
Comprehensive (loss) income, net of taxes		60											(1)	61	60
Ending balance (in shares) at Sep. 30, 2019					100	86,394,716	[1]
Ending balance at Sep. 30, 2019		$ 2,883								$ 1,276			$ (29)	$ 1,627	$ 2,874			$ 9

[1] The Company is authorized to issue 500,000,000 shares of common stock with a par value $0.001 per share.

[2] Includes $149 million of noncontrolling interest related to discontinued operations at September 30, 2018. See Note 3, “Discontinued Operations and Dispositions”, for further discussions.

[3] See Note 14, “Related Party Transactions”, for cash dividends paid on shares for each period.