Earnings Per Share Level 4 (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net Income (Loss) Attributable to Parent [Abstract]
Net income attributable to common stockholders	$ 81,941	$ 79,323
Weighted average shares (denominator):
Weighted average shares — basic	180,854	181,696
Weighted average shares — diluted	183,585	185,317
Net income attributable to common stockholders, basic	$ 0.45	$ 0.44
Net income attributable to common stockholders, diluted	$ 0.45	$ 0.43
Stock Options [Member]
Weighted average shares (denominator):
Share based compensation	2,675	3,562
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,228,000	0
Restricted Stock Units (RSUs) [Member]
Weighted average shares (denominator):
Share based compensation	56	59
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	31,000	37,000