Leases - EGTS - Schedule of Operating and Finance Lease (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Right-of-use assets:
Operating leases	$ 441	$ 501
Operating lease right-of-use asset, statement of financial position	Other assets	Other assets
Total right-of-use assets	$ 840	$ 900
Lease liabilities:
Operating leases	$ 492	$ 555
Operating lease liability, statement of financial position	Other current liabilities, Other long-term liabilities	Other current liabilities, Other long-term liabilities
Total lease liabilities	$ 904	$ 968
EGTS
Right-of-use assets:
Operating leases	$ 17	$ 18
Operating lease right-of-use asset, statement of financial position	Other assets	Other assets
Total right-of-use assets	$ 17	$ 18
Lease liabilities:
Operating leases	$ 16	$ 17
Operating lease liability, statement of financial position	Other current liabilities, Other long-term liabilities	Other current liabilities, Other long-term liabilities
Total lease liabilities	$ 16	$ 17