Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Net Amount	$ 744	$ 670
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	3 years	4 years
Gross Carrying Amount	$ 169	$ 176
Accumulated Amortization	70	58
Net Amount	$ 99	$ 118
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	6 years	6 years
Gross Carrying Amount	$ 2,666	$ 2,468
Accumulated Amortization	2,023	1,919
Net Amount	$ 643	$ 549
Trade names and associated trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Amortization Period	2 years	2 years
Gross Carrying Amount	$ 8	$ 9
Accumulated Amortization	6	6
Net Amount	$ 2	$ 3