Exit Activities - Schedule of Retention Benefit Liability Roll Forward (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Restructuring Reserve [Roll Forward]
Other current liabilities	$ 154		$ 166
Retention Benefits
Restructuring Reserve [Roll Forward]
Retention benefit liability at beginning of period	21	$ 14
Costs deferred as a regulatory asset	5	1
Retention benefit liability at the end of the period	26	15
Other current liabilities	$ 16	$ 5