Earnings Per Share Level 4 (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Income (Loss) Attributable to Parent [Abstract]
Net income attributable to common stockholders	$ 228,879	$ 81,941
Weighted average shares (denominator):
Weighted average shares — basic	169,918	180,854
Weighted average shares — diluted	172,367	183,585
Net income attributable to common stockholders, basic	$ 1.35	$ 0.45
Net income attributable to common stockholders, diluted	$ 1.33	$ 0.45
Revenues	$ 1,077,981	$ 802,965
Stock Options [Member]
Weighted average shares (denominator):
Share based compensation	2,390	2,675
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,276,000	1,228,000
Restricted Stock Units (RSUs) [Member]
Weighted average shares (denominator):
Share based compensation	59	56
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	31,000