CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Other financing costs	$ 8	$ 8	$ 8
Gain (Loss) Related to Litigation Settlement	35	0	0
Workforce Reduction Expense	$ 20	$ 0	$ 0