Acquisitions - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands		9 Months Ended
	Jan. 25, 2022	Sep. 30, 2022	Dec. 31, 2021
Fair Value of Identifiable Assets Acquired and Liabilities Assumed:
Operating Lease Liabilities		$ (2,405,751)	$ (2,171,472)
Goodwill initially recorded		4,831,306	$ 4,463,531
2022 Acquisitions
Business Acquisition [Line Items]
Cash paid (gross of cash acquired)		756,003
Deferred purchase obligation, purchase price holdbacks and other		279,734
Total Consideration		1,035,737
Fair Value of Identifiable Assets Acquired and Liabilities Assumed:
Cash		31,571
Accounts Receivable, Prepaid Expenses and Other Assets		73,351
Property, Plant and Equipment		7,893
Operating Lease Right-of-Use Assets		32,680
Accounts Payable, Accrued Expenses and Other Liabilities		(60,683)
Operating Lease Liabilities		(32,680)
Deferred Income Taxes		(142,019)
Total Fair Value of Identifiable Net Assets Acquired		448,835
Goodwill initially recorded		586,902
Proceeds from previous acquisition		219
Deferred purchase obligation, purchase price holdbacks and other, fair value		275,100
2022 Acquisitions | Customer Relationships
Fair Value of Identifiable Assets Acquired and Liabilities Assumed:
Intangible assets		491,422
2022 Acquisitions | Other Intangible Assets
Fair Value of Identifiable Assets Acquired and Liabilities Assumed:
Intangible assets		47,300
Other 2022 Acquisition
Business Acquisition [Line Items]
Deferred purchase obligation, purchase price holdbacks and other		$ 4,600
Total Consideration	$ 11,000
ITRenew
Business Acquisition [Line Items]
Cash paid (gross of cash acquired)	748,846
Total Consideration	$ 725
Fair Value of Identifiable Assets Acquired and Liabilities Assumed:
Acquired finite-lived intangible assets, weighted average useful life		11 years