Leases (Tables)

9 Months Ended

Sep. 30, 2020

Leases

Summary of total lease cost

	For the Three Months Ended				For the Nine Months Ended
	September 30,				September 30,
	2020		2019		2020		2019
Operating lease cost	$	84,065	$	80,767	$	250,721	$	239,672
Short-term operating lease cost		1,617		1,103		4,342		4,707
Variable operating lease cost		20,630		19,538		61,739		56,801
Sublease income		(1,235)		(1,062)		(3,597)		(2,995)
Total lease cost	$	105,077	$	100,346	$	313,205	$	298,185

Other lease related information

	For the Nine Months Ended
	September 30,
	2020		2019
Cash paid for amounts included in the measurement of operating lease liabilities:
Operating cash flows from operating leases	$	249,584	$	237,055
Right-of-use assets obtained in exchange for new operating lease liabilities		176,714		153,046