GOODWILL AND OTHER INTANGIBLE ASSETS - Balance in Intangible Assets, Net (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Intangible Assets, Gross (Excluding Goodwill), Total	$ 903	$ 876
Accumulated amortization	666	642
Total intangible assets, net	237	$ 234
Weighted average life
Weighted average life		6 years 1 month 6 days	6 years 1 month 6 days
Customer lists and relationships
Gross carrying amount	164	$ 166
Accumulated amortization	153	153
Net carrying amount	$ 11	$ 13
Customer lists and relationships | Weighted average life
Weighted average life	10 years 7 months 6 days	10 years 7 months 6 days
Trademarks, trade names and other
Gross carrying amount	$ 31	$ 31
Accumulated amortization	24	23
Net carrying amount	$ 7	$ 8
Trademarks, trade names and other | Weighted average life
Weighted average life	14 years 10 months 24 days	14 years 10 months 24 days
Non-amortized trade names and other
Gross carrying amount	$ 18	$ 20
Accumulated amortization	0	0
Non-amortized trade names and other	18	20
Capitalized software
Gross carrying amount	690	659
Accumulated amortization	489	466
Net carrying amount	$ 201	$ 193
Capitalized software | Weighted average life
Weighted average life	4 years 3 months 18 days	4 years 3 months 18 days