CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	Preferred stock	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss
Balance at beginning of period at Dec. 31, 2022		$ 265
Balance at beginning of period, common equity at Dec. 31, 2022			$ 0	$ 12,740	$ 1,683	$ (2,575)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Gain on transfer of certain precious metals trading and financing activities to an affiliate, net of tax				8
Employee benefit plans				(7)
Net income	$ 550				550
Cash dividends declared on preferred stock					(8)
Cash dividends declared on common stock					(1,000)
Other comprehensive income (loss), net of tax	(106)					(106)
Balance at end of period, common equity at Sep. 30, 2023	11,285		0	12,741	1,225	(2,681)
Balance at end of period at Sep. 30, 2023	11,550	265
Balance at beginning of period at Jun. 30, 2023		265
Balance at beginning of period, common equity at Jun. 30, 2023			0	12,735	1,043	(2,386)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Gain on transfer of certain precious metals trading and financing activities to an affiliate, net of tax				8
Employee benefit plans				(2)
Net income	182				182
Other comprehensive income (loss), net of tax	(295)					(295)
Balance at end of period, common equity at Sep. 30, 2023	11,285		0	12,741	1,225	(2,681)
Balance at end of period at Sep. 30, 2023	11,550	265
Balance at beginning of period at Dec. 31, 2023	11,639	265
Balance at beginning of period, common equity at Dec. 31, 2023	11,374		0	12,740	560	(1,926)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Gain on transfer of certain precious metals trading and financing activities to an affiliate, net of tax				0
Employee benefit plans				(6)
Net income	482				482
Cash dividends declared on preferred stock					(8)
Cash dividends declared on common stock					0
Other comprehensive income (loss), net of tax	279					279
Balance at end of period, common equity at Sep. 30, 2024	12,121		0	12,734	1,034	(1,647)
Balance at end of period at Sep. 30, 2024	12,386	265
Balance at beginning of period at Jun. 30, 2024		265
Balance at beginning of period, common equity at Jun. 30, 2024			0	12,736	946	(2,093)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Gain on transfer of certain precious metals trading and financing activities to an affiliate, net of tax				0
Employee benefit plans				(2)
Net income	88				88
Other comprehensive income (loss), net of tax	446					446
Balance at end of period, common equity at Sep. 30, 2024	12,121		$ 0	$ 12,734	$ 1,034	$ (1,647)
Balance at end of period at Sep. 30, 2024	$ 12,386	$ 265