Earnings Per Share - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Income from continuing operations	$ 11,824	$ 65,180	$ 28,094	$ 59,214	$ 87,028	$ 70,879	$ 92,565	$ 90,449	$ 164,312	$ 340,921	$ 249,576
Net income attributable to noncontrolling interests									3,954	5,129	5,113
Net income from continuing operations available to common stockholders, basic and diluted									$ 160,358	$ 335,792	$ 244,463
Denominator:
Basic weighted-average common shares outstanding (in shares)									274,168	275,235	276,893
Add: Dilutive effect of stock options and restricted stock awards (in shares)									2,049	2,283	1,427
Diluted weighted-average common shares outstanding (in shares)									276,217	277,518	278,320
Net income per share attributable to common stockholders:
Basic (in dollars per share)									$ 0.58	$ 1.22	$ 0.88
Diluted (in dollars per share)									$ 0.58	$ 1.21	$ 0.88