Debt Securities, Available-for-Sale, Transfer from Held-to-Maturity, Amount

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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- Definition

Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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Shareholders' Equity - Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 27,307	$ 26,692	$ 25,326	$ 24,762	$ 24,433	$ 23,799	$ 25,326	$ 23,799	$ 23,799
Other comprehensive income (loss) before reclassifications							760	426
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							168	303
Other comprehensive income	149	471	308	689	55	(15)	928	729
Ending balance	27,642	27,307	26,692	25,828	24,762	24,433	27,642	25,828	25,326
AFS transferred to HTM							(287)		(374)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,321)	(1,792)	(2,100)	(2,314)	(2,369)	(2,354)	(2,100)	(2,354)	(2,354)
Other comprehensive income	149	471	308	689	55	(15)
Ending balance	(1,172)	$ (1,321)	(1,792)	(1,625)	$ (2,314)	(2,369)	(1,172)	(1,625)	(2,100)
Net Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(132)			(131)	(132)	(131)	(131)
Other comprehensive income (loss) before reclassifications							(2)	39
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							82	(69)
Other comprehensive income							80	(30)
Ending balance	(52)			(161)			(52)	(161)	(132)
Net Unrealized Gains (Losses) on Investment Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(480)			(947)	(480)	(947)	(947)
Other comprehensive income (loss) before reclassifications							189	206
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							86	371
Other comprehensive income							275	577
Ending balance	(205)			(370)			(205)	(370)	(480)
Net Unrealized Gains (Losses) on Retirement Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(129)			(145)	(129)	(145)	(145)
Other comprehensive income (loss) before reclassifications							4	6
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							0	1
Other comprehensive income							4	7
Ending balance	(125)			(138)			(125)	(138)	(129)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(2,168)			(1,400)	(2,168)	(1,400)	(1,400)
Other comprehensive income (loss) before reclassifications							1,390	197
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							0	0
Other comprehensive income							1,390	197
Ending balance	(778)			(1,203)			(778)	(1,203)	(2,168)
Net Unrealized Gains (Losses) on Hedges of Net Investments in Non-U.S. Subsidiaries
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 809			$ 269	809	269	269
Other comprehensive income (loss) before reclassifications							(821)	(22)
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							0	0
Other comprehensive income							(821)	(22)
Ending balance	$ (12)			$ 247			$ (12)	$ 247	$ 809