Retirement and Benefit Plans - Plan Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure
Plan assets	$ 87	$ 102
Cash equivalents
Defined Benefit Plan Disclosure
Plan assets	3	7
Total debt securities
Defined Benefit Plan Disclosure
Plan assets	84	95
U.S. Treasury and federal agencies securities
Defined Benefit Plan Disclosure
Plan assets	51	55
Asset-backed securities and other debt securities
Defined Benefit Plan Disclosure
Plan assets	33	40
Level 1
Defined Benefit Plan Disclosure
Plan assets	51	59
Level 1 | Cash equivalents
Defined Benefit Plan Disclosure
Plan assets	3	7
Level 1 | Total debt securities
Defined Benefit Plan Disclosure
Plan assets	48	52
Level 1 | U.S. Treasury and federal agencies securities
Defined Benefit Plan Disclosure
Plan assets	48	52
Level 1 | Asset-backed securities and other debt securities
Defined Benefit Plan Disclosure
Plan assets	0	0
Level 2
Defined Benefit Plan Disclosure
Plan assets	36	43
Level 2 | Cash equivalents
Defined Benefit Plan Disclosure
Plan assets	0	0
Level 2 | Total debt securities
Defined Benefit Plan Disclosure
Plan assets	36	43
Level 2 | U.S. Treasury and federal agencies securities
Defined Benefit Plan Disclosure
Plan assets	3	3
Level 2 | Asset-backed securities and other debt securities
Defined Benefit Plan Disclosure
Plan assets	33	40
Level 3
Defined Benefit Plan Disclosure
Plan assets	0	0
Level 3     | Cash equivalents
Defined Benefit Plan Disclosure
Plan assets	0	0
Level 3     | Total debt securities
Defined Benefit Plan Disclosure
Plan assets	0	0
Level 3     | U.S. Treasury and federal agencies securities
Defined Benefit Plan Disclosure
Plan assets	0	0
Level 3     | Asset-backed securities and other debt securities
Defined Benefit Plan Disclosure
Plan assets	$ 0	$ 0