Basis of Presentation - Schedule of Effect of Change in Estimate (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Change in Accounting Estimate [Line Items]
Net change in revolving credit facility and short-term debt	$ 3	$ (393)	$ (396)	$ 268	$ 39
Proceeds from short-term debt	156	127	129	45	15
Payments of short-term debt	(81)	(96)	(131)	(45)	(42)
Net cash provided by (used for) financing activities	$ (260)	(35)	116	(25)	(2,944)
As Previously Reported
Change in Accounting Estimate [Line Items]
Net change in revolving credit facility and short-term debt		(362)	(398)	268	12
Proceeds from short-term debt		0	0	0	0
Payments of short-term debt		0	0	0	0
Net cash provided by (used for) financing activities		(35)	116	(25)	(2,944)
Adjustments
Change in Accounting Estimate [Line Items]
Net change in revolving credit facility and short-term debt		(31)	2	0	27
Proceeds from short-term debt		127	129	45	15
Payments of short-term debt		(96)	(131)	(45)	(42)
Net cash provided by (used for) financing activities		$ 0	$ 0	$ 0	$ 0