CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE OPERATIONS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 220	$ 240	$ 88	$ 98
Related to marketable securities:
Total	4	(5)	5	16
Related to employee benefit plans:
Total	3	4	6	8
Related to interest rate derivative instruments:
Total	0	1	1	(1)
Comprehensive Income (Loss)	227	240	100	121
Other Comprehensive Income (Loss), Net of Tax	$ 7	$ 0	$ 12	$ 23