Earnings (Losses) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net income (loss) (numerator):
Income (loss) from continuing operations, net of tax	$ (192,801)	$ (195,215)	$ (296,177)	$ (338,802)
Less: net (income) loss attributable to noncontrolling interest	(10,729)	(2,953)	(24,905)	(3,492)
Less: preferred stock dividends	(4,312)	(3,680)	(8,625)	(3,680)
Less: accrued distribution on redeemable noncontrolling interest in subsidiary	(5,119)	(2,124)	(10,182)	(4,522)
Less: distributed and undistributed earnings allocated to unvested shareholders	(115)	4,826	(233)	8,186
Adjusted income (loss) from continuing operations, net of tax - basic	(213,076)	(199,146)	(340,122)	(342,310)
Income (loss) from discontinued operations, net of tax	$ (34)	$ (584)	$ (191)	$ (659)
Weighted-average number of shares outstanding - basic	351,543	328,372	351,154	318,580
Earnings (losses) Per Share - Basic
Basic from continuing operations (in dollars per share)	$ (0.61)	$ (0.61)	$ (0.97)	$ (1.08)
Total Basic (in dollars per share)	$ (0.61)	$ (0.61)	$ (0.97)	$ (1.08)
DILUTED EPS:
Adjusted income (loss) from continuing operations, net of tax - basic	$ (213,076)	$ (199,146)	$ (340,122)	$ (342,310)
Adjusted income (loss) from continuing operations, net of tax - diluted	(213,076)	(199,146)	(340,122)	(342,310)
Income (loss) from discontinued operations, net of tax	$ (34)	$ (584)	$ (191)	$ (659)
Weighted-average number of shares outstanding - basic	351,543	328,372	351,154	318,580
Weighted-average number of shares outstanding - diluted	351,543	328,372	351,154	318,580
Earnings (losses) per share:
Diluted from continuing operations (in dollars per share)	$ (0.61)	$ (0.61)	$ (0.97)	$ (1.08)
Total Diluted (in dollars per share)	$ (0.61)	$ (0.61)	$ (0.97)	$ (1.08)
0.75% senior exchangeable notes due January 2024
Earnings (losses) per share:
Aggregate amount of senior notes	$ 575,000		$ 575,000
Interest rate on senior notes due (as a percent)	0.75%		0.75%
0.75% senior exchangeable notes due January 2024 | Minimum
Earnings (losses) per share:
Share issued price (in dollars per share)	$ 25.16		$ 25.16