Earnings (Losses) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net income (loss) (numerator):
Income (loss) from continuing operations, net of tax	$ (99,788)	$ (93,710)	$ (395,965)	$ (432,512)
Less: net (income) loss attributable to noncontrolling interest	(19,297)	(6,934)	(44,202)	(10,426)
Less: preferred stock dividends	(4,310)	(4,313)	(12,935)	(7,993)
Less: accrued distribution on redeemable noncontrolling interest in subsidiary	(5,176)	(2,146)	(15,358)	(6,668)
Less: distributed and undistributed earnings allocated to unvested shareholders	(114)	(432)	(347)	(1,375)
Adjusted income (loss) from continuing operations, net of tax - basic	(128,685)	(107,535)	(468,807)	(458,974)
Income (loss) from discontinued operations, net of tax	$ 157	$ (13,933)	$ (34)	$ (14,592)
Weighted-average number of shares outstanding - basic	352,026	350,194	351,444	329,118
Earnings (losses) Per Share - Basic
Basic from continuing operations (in dollars per share)	$ (0.37)	$ (0.31)	$ (1.33)	$ (1.39)
Basic from discontinued operations (in dollars per share)		(0.04)		(0.05)
Total Basic (in dollars per share)	$ (0.37)	$ (0.35)	$ (1.33)	$ (1.44)
DILUTED EPS:
Adjusted income (loss) from continuing operations, net of tax - basic	$ (128,685)	$ (107,535)	$ (468,807)	$ (458,974)
Adjusted income (loss) from continuing operations, net of tax - diluted	(128,685)	(107,535)	(468,807)	(458,974)
Income (loss) from discontinued operations, net of tax	$ 157	$ (13,933)	$ (34)	$ (14,592)
Weighted-average number of shares outstanding - basic	352,026	350,194	351,444	329,118
Weighted-average number of shares outstanding - diluted	352,026	350,194	351,444	329,118
Earnings (losses) per share:
Diluted from continuing operations (in dollars per share)	$ (0.37)	$ (0.31)	$ (1.33)	$ (1.39)
Diluted from discontinued operations (in dollars per share)		(0.04)		(0.05)
Total Diluted (in dollars per share)	$ (0.37)	$ (0.35)	$ (1.33)	$ (1.44)
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