Quarterly Financial Data (Unaudited) - Consolidated Operating Results by Quarter (Details) - USD ($) $ / shares in Units, $ 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
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 3,112,800	$ 3,352,895	$ 2,839,199	$ 2,807,259	$ 3,112,218	$ 2,985,281	$ 2,656,348	$ 2,417,576	$ 12,112,153	$ 11,171,423	$ 9,466,478
Gross profit	443,321	473,445	319,505	363,981	419,715	425,830	333,371	301,048	1,600,252	1,479,964	1,241,860
Net income	120,299	137,022	28,459	121,035	57,791	124,899	74,706	38,611	$ 406,815	$ 296,007	$ 318,225
Net income attributable to common stock	$ 118,144	$ 136,068	$ 27,344	$ 120,488	$ 56,816	$ 124,551	$ 74,365	$ 37,614
Basic earnings per share from continuing operations attributable to common stock (in dollars per share)	$ 0.81	$ 0.93	$ 0.19	$ 0.83	$ 0.38	$ 0.82	$ 0.49	$ 0.24
Diluted earnings per share from continuing operations attributable to common stock (in dollars per share)	$ 0.80	$ 0.92	$ 0.19	$ 0.82	$ 0.38	$ 0.81	$ 0.48	$ 0.24