Consolidated Statements of Cash Flows - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Operating Activities
Net cash used in operating activities		$ (1,585)	$ (5,991)
Investing Activities
Proceeds from sale of AFS securities including loans that have been securitized		1,322	6,175
Collection of principal on investment securities AFS		572	395
Purchase of investment securities AFS and other		(283)	(359)
Collection of principal on investment securities HTM		141	158
Proceeds received from the sale of LHFI		79	433
Net closings, purchases, and principal repayments of LHFI		1,919	(4,794)
Acquisition of premises and equipment, net of proceeds		(27)	(44)
Net purchase of FHLB stock		0	(74)
Net proceeds from the sale of MSRs		147	42
Other, net		(13)	(11)
Net cash provided by investing activities		3,857	1,921
Financing Activities
Net change in deposit accounts		(636)	4,799
Net change in short-term FHLB borrowings and other short-term debt		(2,030)	(1,939)
Proceeds from increases in FHLB long-term advances and other debt		200	550
Repayment of long-term debt		(246)	(3)
Net receipt of payments of loans serviced for others		(50)	531
Dividends declared and paid		(11)	(9)
Other		26	(8)
Net cash (used in) provided by financing activities		(2,747)	3,921
Net change in cash, cash equivalents and restricted cash	[1]	(475)	(149)
Beginning cash, cash equivalents and restricted cash	[1]	654	456
Ending cash, cash equivalents and restricted cash	[1]	179	307
Supplemental disclosure of cash flow information
Non-cash reclassification of LHFI to LHFS		53	445
Non-cash reclassification of LHFS to securitized LHFS		1,517	6,183
MSRs resulting from sale or securitization of loans		196	209
Beneficial interest in RMBS		195	0
Operating section supplemental disclosures
Proceeds from sales of LHFS		39,929	30,332
Closings, premium paid and purchase of LHFS, net of principal repayments		$ (41,112)	$ (35,603)

[1] For further information on restricted cash, see Note 8 - Derivatives.