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Financing Receivable, Percentage

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Number of segments in which the loan portfolio is segregated.

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Percentage of allowance for credit loss to total financing receivable outstanding.

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Amount, after allowance for credit loss, of accrued interest on financing receivable.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount excluding accrued interest, after allowance for credit loss, of financing receivable.

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Amount excluding accrued interest, before allowance for credit loss, of financing receivable.

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BANK LOANS, NET, Held for Sale and Held for Investment (Details) $ in Millions	Sep. 30, 2021 USD ($) portfolio_segment	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)
Receivables [Abstract]
Number of loan portfolio segments \| portfolio_segment	6
Balance
Total loans held for investment	$ 25,314	$ 21,549	$ 21,109	$ 19,721	$ 17,197
Allowance for loan losses	(320)	(354)	(218)	(203)	(190)
Bank loans, net	24,994	21,195	20,891	19,518	17,007
Accrued interest receivable on bank loans	$ 48	$ 45	$ 53	$ 52	$ 37
Percentage
Percentage of loans held for investment or held for sale	100.00%	100.00%	100.00%	100.00%	100.00%
Allowance for credit loss as a percentage of held for investment loan portfolio	1.27%
Total loans held for investment
Balance
Total loans held for investment	$ 25,169	$ 21,439	$ 20,967	$ 19,557	$ 17,127
Allowance for loan losses	$ (320)	$ (354)	$ (218)
Percentage
Percentage of loans held for investment or held for sale	99.00%	99.00%	99.00%	99.00%	100.00%
Held for sale loans
Balance
Total loans held for investment	$ 145	$ 110	$ 142	$ 164	$ 70
Percentage
Percentage of loans held for investment or held for sale	1.00%	1.00%	1.00%	1.00%	0.00%
C&I loans
Balance
Total loans held for investment	$ 8,440	$ 7,421
C&I loans \| Total loans held for investment
Balance
Total loans held for investment	8,440	7,421	$ 8,056	$ 7,741	$ 7,339
Allowance for loan losses	$ (191)	$ (200)	$ (139)
Percentage
Percentage of loans held for investment or held for sale	33.00%	34.00%	38.00%	39.00%	43.00%
CRE loans
Balance
Total loans held for investment	$ 2,872	$ 2,489
CRE loans \| Total loans held for investment
Balance
Total loans held for investment	2,872	2,489	$ 2,507	$ 2,309	$ 1,859
Allowance for loan losses	$ (66)	$ (81)	$ (34)
Percentage
Percentage of loans held for investment or held for sale	11.00%	12.00%	12.00%	12.00%	11.00%
REIT loans
Balance
Total loans held for investment	$ 1,112	$ 1,210
REIT loans \| Total loans held for investment
Balance
Total loans held for investment	1,112	1,210	$ 1,333	$ 1,470	$ 1,361
Allowance for loan losses	$ (22)	$ (36)	$ (15)
Percentage
Percentage of loans held for investment or held for sale	5.00%	5.00%	6.00%	8.00%	8.00%
Tax-exempt loans
Balance
Total loans held for investment	$ 1,321	$ 1,259
Tax-exempt loans \| Total loans held for investment
Balance
Total loans held for investment	1,321	1,259	$ 1,241	$ 1,227	$ 1,018
Allowance for loan losses	$ (2)	$ (14)	$ (9)
Percentage
Percentage of loans held for investment or held for sale	5.00%	6.00%	6.00%	6.00%	6.00%
Residential mortgage loans
Balance
Total loans held for investment	$ 5,318	$ 4,973
Residential mortgage loans \| Total loans held for investment
Balance
Total loans held for investment	5,318	4,973	$ 4,479	$ 3,775	$ 3,162
Allowance for loan losses	$ (35)	$ (18)	$ (16)
Percentage
Percentage of loans held for investment or held for sale	21.00%	23.00%	21.00%	19.00%	18.00%
SBL and other
Balance
Total loans held for investment	$ 6,106	$ 4,087
SBL and other \| Total loans held for investment
Balance
Total loans held for investment	6,106	4,087	$ 3,351	$ 3,035	$ 2,388
Allowance for loan losses	$ (4)	$ (5)	$ (5)
Percentage
Percentage of loans held for investment or held for sale	24.00%	19.00%	16.00%	15.00%	14.00%