Leases - EGTS - Schedule of Operating and Finance Lease, Supplemental Cash Flow (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Operating cash flows from operating leases	$ 138	$ 141	$ 163
Operating cash flows from finance leases	35	36	38
EGTS
Lessee, Lease, Description [Line Items]
Operating cash flows from operating leases	2	2	3
Operating cash flows from finance leases	$ 0	$ 0	$ 1