Earnings Per Share Level 4 (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net Income (Loss) Attributable to Parent [Abstract]
Net income attributable to common stockholders	$ 157,705	$ 105,508	$ 386,584	$ 187,449
Weighted average shares (denominator):
Weighted average shares — basic	168,450	177,902	169,180	179,378
Weighted average shares — diluted	170,863	179,666	171,616	181,639
Net income attributable to common stockholders, basic	$ 0.94	$ 0.59	$ 2.29	$ 1.04
Net income attributable to common stockholders, diluted	$ 0.92	$ 0.59	$ 2.25	$ 1.03
Revenues	$ 987,535	$ 820,035	$ 2,065,516	$ 1,623,000
Stock Options [Member]
Weighted average shares (denominator):
Share based compensation	2,363	1,740	2,382	2,221
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,612,000	2,706,000	1,445,000	1,486,000
Restricted Stock Units (RSUs) [Member]
Weighted average shares (denominator):
Share based compensation	50	24	54	40
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	67,000	0	49,000