DISCONTINUED OPERATIONS, SIGNIFICANT DISPOSALS AND OTHER BUSINESS EXITS - Income before Taxes, Assets and Liabilities Held-for-Sale (Details) - USD ($) $ in Millions			3 Months Ended			9 Months Ended
	Aug. 01, 2022	Jun. 01, 2022	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Discontinued Operations, Disposed of by Sale | Legacy Franchises
Results of Discontinued Operations
Loss on sale of business, foreign currency translation adjustments				$ 400
Loss on sale of business, foreign currency translation adjustments, after-tax				345
Australia
Results of Discontinued Operations
Income (loss) before taxes			$ 0		$ 95	$ 193	$ 236
Australia | Discontinued Operations, Held-for-sale
Assets
Cash and deposits with banks			0			0
Loans			0			0
Goodwill			0			0
Other assets, advances to/from subsidiaries			0			0
Other assets			0			0
Total assets			0			0
Liabilities
Deposits			0			0
Long-term debt			0			0
Other liabilities			0			0
Total liabilities			0			0
Results of Discontinued Operations
Loss on sale of business, foreign currency translation adjustments						620
Loss on sale of business, foreign currency translation adjustments, after-tax						470
Australia | Discontinued Operations, Disposed of by Sale
Assets
Loans		$ 9,300
Total assets		9,400
Liabilities
Deposits		6,800
Total liabilities		7,300
Results of Discontinued Operations
Allowance		140
Pretax gain (loss) on sale of business		(780)
Gain (loss) on sale of business, after-tax		(650)
Loss on sale of business, foreign currency translation adjustments		620
Loss on sale of business, foreign currency translation adjustments, after-tax		$ 470
Philippines
Results of Discontinued Operations
Income (loss) before taxes			7		47	72	114
Philippines | Discontinued Operations, Held-for-sale
Assets
Cash and deposits with banks			0			0
Loans			0			0
Goodwill			0			0
Other assets, advances to/from subsidiaries			0			0
Other assets			0			0
Total assets			0			0
Liabilities
Deposits			0			0
Long-term debt			0			0
Other liabilities			0			0
Total liabilities			0			0
Philippines | Discontinued Operations, Disposed of by Sale
Assets
Loans	$ 1,200
Total assets	1,800
Liabilities
Deposits	1,200
Total liabilities	1,300
Results of Discontinued Operations
Allowance	80
Pretax gain (loss) on sale of business	616
Gain (loss) on sale of business, after-tax	$ 290
Thailand
Results of Discontinued Operations
Income (loss) before taxes			28		17	106	108
Thailand | Discontinued Operations, Held-for-sale
Assets
Cash and deposits with banks			16			16
Loans			2,374			2,374
Goodwill			145			145
Other assets, advances to/from subsidiaries			199			199
Other assets			81			81
Total assets			2,815			2,815
Liabilities
Deposits			865			865
Long-term debt			0			0
Other liabilities			135			135
Total liabilities			1,000			1,000
Results of Discontinued Operations
Allowance			67			67
Taiwan
Results of Discontinued Operations
Income (loss) before taxes			15		71	111	221
Taiwan | Discontinued Operations, Held-for-sale
Assets
Cash and deposits with banks			96			96
Loans			7,455			7,455
Goodwill			192			192
Other assets, advances to/from subsidiaries			4,727			4,727
Other assets			190			190
Total assets			12,660			12,660
Liabilities
Deposits			9,851			9,851
Long-term debt			0			0
Other liabilities			214			214
Total liabilities			10,065			10,065
Results of Discontinued Operations
Allowance			56			56
India
Results of Discontinued Operations
Income (loss) before taxes			37		$ 59	161	$ 157
India | Discontinued Operations, Held-for-sale
Assets
Cash and deposits with banks			24			24
Loans			3,431			3,431
Goodwill			313			313
Other assets, advances to/from subsidiaries			2,134			2,134
Other assets			99			99
Total assets			6,001			6,001
Liabilities
Deposits			5,472			5,472
Long-term debt			0			0
Other liabilities			191			191
Total liabilities			5,663			5,663
Results of Discontinued Operations
Allowance			$ 44			$ 44
Egg Banking Business | Discontinued Operations, Disposed of by Sale
Results of Discontinued Operations
Loss on sale of business, foreign currency translation adjustments				260
Loss on sale of business, foreign currency translation adjustments, after-tax				$ 221