Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Net Amount	$ 728	$ 452
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	4 years	3 years
Gross Carrying Amount	$ 176	$ 69
Accumulated Amortization	50	22
Net Amount	$ 126	$ 47
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	6 years	5 years
Gross Carrying Amount	$ 2,694	$ 2,349
Accumulated Amortization	2,095	1,949
Net Amount	$ 599	$ 400
Trade names and associated trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	2 years	3 years
Gross Carrying Amount	$ 9	$ 14
Accumulated Amortization	6	9
Net Amount	$ 3	$ 5