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						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income/(loss)	$ 113,943	$ 113,742	$ 103,405	$ 274,716	$ 85,992	$ 94,994	$ 331,090	$ 455,702
Net income attributable to noncontrolling interest	2,883			2,883			8,555	8,555
Net income/(loss) attributable to controlling interest	111,060			271,833			322,535	447,147
Preferred stock dividends	1,550	$ 1,550	$ 1,550	1,550	$ 1,550	$ 1,550	4,650	4,650
Net income/(loss) available to common shareholders	$ 109,510			$ 270,283			$ 317,885	$ 442,497
Weighted average common shares outstanding - basic (in shares)	311,888			324,406			314,442	325,341
Effect of dilutive securities (in shares)	1,917			2,846			1,959	3,304
Weighted average common shares outstanding - diluted (in shares)	313,805			327,252			316,401	328,645
Net income/(loss) per share available to common shareholders (in dollars per share)	$ 0.35			$ 0.83			$ 1.01	$ 1.36
Diluted income/(loss) per share available to common shareholders (in dollars per share)	$ 0.35			$ 0.83			$ 1.00	$ 1.35