Earnings Per Share - Schedule Of Reconciliation Of Net Income/(Loss) to Net Income/(Loss) Available to Common Shareholders (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income/(loss)	$ 113,742	$ 103,405	$ 85,992	$ 94,994	$ 217,147	$ 180,986
Net income attributable to noncontrolling interest	2,852		2,852		5,672	5,672
Net income/(loss) attributable to controlling interest	110,890		83,140		211,475	175,314
Preferred stock dividends	1,550	$ 1,550	1,550	$ 1,550	3,100	3,100
Net income/(loss) available to common shareholders	$ 109,340		$ 81,590		$ 208,375	$ 172,214
Weighted average common shares outstanding - basic (in shares)	314,063		325,153		315,740	325,817
Effect of dilutive securities (in shares)	1,723		3,273		1,980	3,536
Weighted average common shares outstanding - diluted (in shares)	315,786		328,426		317,720	329,353
Net income/(loss) per share available to common shareholders (in dollars per share)	$ 0.35		$ 0.25		$ 0.66	$ 0.53
Diluted income/(loss) per share available to common shareholders (in dollars per share)	$ 0.35		$ 0.25		$ 0.66	$ 0.52