Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Components of Lease Expense

The components of lease expense were as follows:

	Year ended December 31
(in thousands)	2021		2020		2019
Operating lease cost	$	96,078	$	113,669	$	104,007
Short-term and month-to-month lease cost	17,724		21,862		19,267
Variable lease cost	20,889		18,718		20,582
Sublease income	(16,918)		(18,508)		(20,108)
Total net lease cost	$	117,773	$	135,741	$	123,748

Supplemental Cash Flow And Balance Sheet Information Related To Leases

Supplemental information related to leases was as follows:

	Year ended December 31
(in thousands)	2021		2020			2019
Cash Flow Information:
Operating cash flows from operating leases (payments)	$	105,164	$	113,664		$	112,671
Right-of-use assets obtained in exchange for new operating lease liabilities (noncash)	59,409		27,031			236,714
			As of December 31
			2021			2020
Balance Sheet Information:
Lease right-of-use assets			$	437,969		$	462,560
Current lease liabilities			$	77,655		$	86,797
Noncurrent lease liabilities			405,200			428,849
Total lease liabilities			$	482,855		$	515,646
Weighted average remaining lease term (years)			10.6			9.9
Weighted average discount rate			4.6		%	4.4		%

Maturities of Operating Lease Liabilities

At December 31, 2021, maturities of lease liabilities were as follows:

(in thousands)	December 31, 2021
2022	$	97,501
2023	79,854
2024	64,030
2025	50,392
2026	45,897
Thereafter	296,514
Total payments	634,188
Less: Imputed interest	(151,333)
Total	$	482,855