Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Partners' Capital [Abstract]
Net Income (Loss)	$ 531	$ 702
Other comprehensive income (loss), net of tax and reclassification adjustments:
Net unrealized gains (losses) on investment securities	(10)	65
Cash flow hedges adjustments	(117)	81
Defined benefit plans liability adjustments	(1)	(2)
Foreign currency translation adjustments	(2)	1
Total other comprehensive income (loss)	(130)	145
Total comprehensive income	$ 401	$ 847