LOANS - Consumer Troubled Debt Restructurings (Details) - Consumer $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) loan
Residential first mortgages
Loans receivable
Number of days past due, non-accrual status	90 days
Home equity loans
Loans receivable
Number of days past due, non-accrual status	90 days
Credit cards
Loans receivable
Number of days past due, non-accrual status	180 days
Personal, small business and other
Loans receivable
Number of days past due, non-accrual status	90 days
In North America offices
Loans receivable
Number of loans modified \| loan		178,411
Post-modification recorded investment		$ 1,085.0
Loans in default	$ 147.0	$ 290.0
In North America offices \| Residential first mortgages
Loans receivable
Number of loans modified \| loan		1,133
Post-modification recorded investment		$ 263.0
Average interest rate reduction (as a percent)		0.00%
Post-modification recorded investment for borrowers that have gone through Chapter 7 bankruptcy		$ 5.0
Loans in default	12.0	35.0
In North America offices \| Residential first mortgages \| New OCC guidance
Loans receivable
Post-modification recorded investment for borrowers that have gone through Chapter 7 bankruptcy		$ 3.8
In North America offices \| Home equity loans
Loans receivable
Number of loans modified \| loan		451
Post-modification recorded investment		$ 40.0
Average interest rate reduction (as a percent)		0.00%
Loans in default	0.0	$ 4.0
In North America offices \| Credit cards
Loans receivable
Number of loans modified \| loan		176,252
Post-modification recorded investment		$ 775.0
Average interest rate reduction (as a percent)		18.00%
Loans in default	134.0	$ 250.0
In North America offices \| Personal, small business and other
Loans receivable
Number of loans modified \| loan		575
Post-modification recorded investment		$ 7.0
Average interest rate reduction (as a percent)		5.00%
Loans in default	1.0	$ 1.0
In offices outside the U.S.
Loans receivable
Number of loans modified \| loan		19,121
Post-modification recorded investment		$ 118.0
Loans in default	11.0	$ 25.0
In offices outside the U.S. \| Residential first mortgages
Loans receivable
Number of loans modified \| loan		683
Post-modification recorded investment		$ 21.0
Average interest rate reduction (as a percent)		0.00%
Loans in default	3.0	$ 10.0
In offices outside the U.S. \| Credit cards
Loans receivable
Number of loans modified \| loan		16,006
Post-modification recorded investment		$ 68.0
Average interest rate reduction (as a percent)		25.00%
Loans in default	5.0	$ 12.0
In offices outside the U.S. \| Personal, small business and other
Loans receivable
Number of loans modified \| loan		2,432
Post-modification recorded investment		$ 29.0
Average interest rate reduction (as a percent)		8.00%
Loans in default	3.0	$ 3.0
Deferred principal \| In North America offices
Loans receivable
Post-modification recorded investment		0.0
Loans in default	1.0
Deferred principal \| In North America offices \| Residential first mortgages
Loans receivable
Post-modification recorded investment		0.0
Loans in default	1.0
Deferred principal \| In North America offices \| Home equity loans
Loans receivable
Post-modification recorded investment		0.0
Loans in default	0.0
Deferred principal \| In North America offices \| Credit cards
Loans receivable
Post-modification recorded investment		0.0
Loans in default	0.0
Deferred principal \| In North America offices \| Personal, small business and other
Loans receivable
Post-modification recorded investment		0.0
Loans in default	0.0
Deferred principal \| In offices outside the U.S.
Loans receivable
Post-modification recorded investment		0.0
Loans in default	3.0
Deferred principal \| In offices outside the U.S. \| Residential first mortgages
Loans receivable
Post-modification recorded investment		0.0
Loans in default	3.0
Deferred principal \| In offices outside the U.S. \| Credit cards
Loans receivable
Post-modification recorded investment		0.0
Loans in default	0.0
Deferred principal \| In offices outside the U.S. \| Personal, small business and other
Loans receivable
Post-modification recorded investment		0.0
Loans in default	$ 0.0
Contingent principal forgiveness \| In North America offices
Loans receivable
Post-modification recorded investment		0.0
Contingent principal forgiveness \| In North America offices \| Residential first mortgages
Loans receivable
Post-modification recorded investment		0.0
Contingent principal forgiveness \| In North America offices \| Home equity loans
Loans receivable
Post-modification recorded investment		0.0
Contingent principal forgiveness \| In North America offices \| Credit cards
Loans receivable
Post-modification recorded investment		0.0
Contingent principal forgiveness \| In North America offices \| Personal, small business and other
Loans receivable
Post-modification recorded investment		0.0
Contingent principal forgiveness \| In offices outside the U.S.
Loans receivable
Post-modification recorded investment		0.0
Contingent principal forgiveness \| In offices outside the U.S. \| Residential first mortgages
Loans receivable
Post-modification recorded investment		0.0
Contingent principal forgiveness \| In offices outside the U.S. \| Credit cards
Loans receivable
Post-modification recorded investment		0.0
Contingent principal forgiveness \| In offices outside the U.S. \| Personal, small business and other
Loans receivable
Post-modification recorded investment		0.0
Principal forgiveness \| In North America offices
Loans receivable
Post-modification recorded investment		0.0
Principal forgiveness \| In North America offices \| Residential first mortgages
Loans receivable
Post-modification recorded investment		0.0
Principal forgiveness \| In North America offices \| Home equity loans
Loans receivable
Post-modification recorded investment		0.0
Principal forgiveness \| In North America offices \| Credit cards
Loans receivable
Post-modification recorded investment		0.0
Principal forgiveness \| In North America offices \| Personal, small business and other
Loans receivable
Post-modification recorded investment		0.0
Principal forgiveness \| In offices outside the U.S.
Loans receivable
Post-modification recorded investment		2.0
Principal forgiveness \| In offices outside the U.S. \| Residential first mortgages
Loans receivable
Post-modification recorded investment		0.0
Principal forgiveness \| In offices outside the U.S. \| Credit cards
Loans receivable
Post-modification recorded investment		1.0
Principal forgiveness \| In offices outside the U.S. \| Personal, small business and other
Loans receivable
Post-modification recorded investment		$ 1.0

Represents the average interest rate reduction given under troubled debt restructurings.

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified during the period by troubled debt restructurings after the financing receivable has been modified for borrowers that have gone through Chapter 7 bankruptcy.

+ References

No definition available.

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- Definition

Represents the number of days, the loan is past due for classifying as non-accrual.

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Number of financing receivables that have been modified by troubled debt restructurings.

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- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

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- Definition

Amortized cost of financing receivable with payment default in current period and modified within previous 12 months preceding payment default for debtor experiencing financial difficulty.

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