CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - 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, 2020		$ 1,265
Balance at beginning of period, common equity at Dec. 31, 2020			$ 0	$ 15,746	$ 601	$ 679
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock redemption		0
Return of capital to parent				(1,000)
Gain on transfer of certain precious metals trading and financing activities to an affiliate, net of tax				0
Employee benefit plans				(4)
Net income	$ 688				688
Cash dividends declared on preferred stock					(77)
Cash dividends declared on common stock					0
Other comprehensive income (loss), net of tax	(858)					(858)
Balance at end of period, common equity at Dec. 31, 2021	15,775		$ 0	14,742	1,212	(179)
Balance at end of period at Dec. 31, 2021	17,040	$ 1,265
Beginning balance (shares) at Dec. 31, 2020		1,265	714
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Number of shares of preferred stock redeemed (in shares)		0
Ending balance (shares) at Dec. 31, 2021		1,265	714
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock redemption		$ (1,000)
Return of capital to parent				(2,000)
Gain on transfer of certain precious metals trading and financing activities to an affiliate, net of tax				0
Employee benefit plans				(2)
Net income	548				548
Cash dividends declared on preferred stock					(77)
Cash dividends declared on common stock					0
Other comprehensive income (loss), net of tax	(2,396)					(2,396)
Balance at end of period, common equity at Dec. 31, 2022	11,848		$ 0	12,740	1,683	(2,575)
Balance at end of period at Dec. 31, 2022	12,113	$ 265
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Number of shares of preferred stock redeemed (in shares)		(1,000)
Ending balance (shares) at Dec. 31, 2022		265	714
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock redemption		$ 0
Return of capital to parent				0
Gain on transfer of certain precious metals trading and financing activities to an affiliate, net of tax				8
Employee benefit plans				(8)
Net income	393				393
Cash dividends declared on preferred stock					(16)
Cash dividends declared on common stock					(1,500)
Other comprehensive income (loss), net of tax	649					649
Balance at end of period, common equity at Dec. 31, 2023	11,374		$ 0	$ 12,740	$ 560	$ (1,926)
Balance at end of period at Dec. 31, 2023	$ 11,639	$ 265
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Number of shares of preferred stock redeemed (in shares)		0
Ending balance (shares) at Dec. 31, 2023		265	714