Acquisitions and Dispositions of Businesses (Assets Acquired and Liabilities Assumed) (Details 1) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill	$ 1,617,648	$ 1,649,582
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Accounts receivable		17,928
Inventory		25,383
Property, plant and equipment		13,126
Lease right-of-use assets		25,890
Goodwill		204,070
Indefinite-lived intangible assets		22,200
Amortized intangible assets		99,800
Other assets		4,911
Deferred income tax asset		44,975
Floor plan payables		(16,198)
Other liabilities		(52,760)
Current and noncurrent lease liabilities		(25,593)
Redeemable noncontrolling interest		(6,616)
Aggregate purchase price, net of cash acquired		$ 357,116