ACQUISITIONS - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Dec. 31, 2023	Nov. 01, 2023	Dec. 31, 2022	Jan. 01, 2022
Assets:
Goodwill	$ 940		$ 861
IFS
Assets:
Total current assets		$ 39
Operating property and equipment, net		20
Goodwill		79
Intangible assets, net		131
Sales-type leases and other assets		59
Total assets		328
Liabilities:
Total current liabilities		40
Other non-current liabilities		33
Total liabilities		73
Net assets acquired		$ 255
Whiplash
Assets:
Total current assets				$ 92
Operating property and equipment, net				40
Goodwill				280
Intangible assets, net				150
Sales-type leases and other assets				196
Total assets				758
Liabilities:
Total current liabilities				106
Other non-current liabilities				169
Total liabilities				275
Net assets acquired				$ 483