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SECURITIES - Schedule of Available for Sale Securities Debt Maturities (Details) $ in Millions | Mar. 31, 2021 USD ($)
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Amortized cost: |
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less | $ 13
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years | 108
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years | 1,626
Amortized Cost, Debt securities available for sale, Maturity After 10 Years | 22,557
Amortized Cost, Debt securities available for sale, Total | 24,304
Amortized Cost, Debt securities held to maturity, Maturity of 1 Year or Less | 0
Amortized Cost, Debt securities held to maturity, Maturity of 1-5 Years | 0
Amortized Cost, Debt securities held to maturity, Maturity of 5-10 Years | 856
Amortized Cost, Debt securities held to maturity, Maturity After 10 Years | 2,139
Amortized Cost, Debt securities held to maturity, Total | 2,995
Total amortized cost of debt securities, Maturity of 1 Year or Less | 13
Total amortized cost of debt securities, Maturity of 1-5 Years | 108
Total amortized cost of debt securities, Maturity of 5-10 Years | 2,482
Total amortized cost of debt securities, Maturity After 10 Years | 24,696
Total amortized cost of debt securities, Total | 27,299
Fair value: |
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less | 13
Fair Value, Debt securities available for sale, Maturity of 1-5 Years | 111
Fair Value, Debt securities available for sale, Maturity of 5-10 Years | 1,676
Fair Value, Debt securities available for sale, Maturity After 10 Years | 22,667
Fair Value, Debt securities available for sale, Total | 24,467
Fair Value, Debt securities held to maturity, Maturity of 1 Year or Less | 0
Fair Value, Debt securities held to maturity, Maturity of 1-5 Years | 0
Fair Value, Debt securities held to maturity, Maturity of 5-10 Years | 854
Fair Value, Debt securities held to maturity, Maturity After 10 Years | 2,223
Fair Value, Debt securities held to maturity, Total | 3,077
Total fair value of debt securities, Maturity of 1 Year or Less | 13
Total fair value of debt securities, Maturity of 1-5 Years | 111
Total fair value of debt securities, Maturity of 5-10 Years | 2,530
Total fair value of debt securities, Maturity After 10 Years | 24,890
Total fair value of debt securities, Total | 27,544
U.S. Treasury and other |
Amortized cost: |
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less | 11
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years | 0
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years | 0
Amortized Cost, Debt securities available for sale, Maturity After 10 Years | 0
Amortized Cost, Debt securities available for sale, Total | 11
Fair value: |
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less | 11
Fair Value, Debt securities available for sale, Maturity of 1-5 Years | 0
Fair Value, Debt securities available for sale, Maturity of 5-10 Years | 0
Fair Value, Debt securities available for sale, Maturity After 10 Years | 0
Fair Value, Debt securities available for sale, Total | 11
State and political subdivisions |
Amortized cost: |
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less | 0
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years | 0
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years | 0
Amortized Cost, Debt securities available for sale, Maturity After 10 Years | 3
Amortized Cost, Debt securities available for sale, Total | 3
Fair value: |
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less | 0
Fair Value, Debt securities available for sale, Maturity of 1-5 Years | 0
Fair Value, Debt securities available for sale, Maturity of 5-10 Years | 0
Fair Value, Debt securities available for sale, Maturity After 10 Years | 3
Fair Value, Debt securities available for sale, Total | 3
Federal agencies and U.S. government sponsored entities |
Amortized cost: |
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less | 2
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years | 108
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years | 1,626
Amortized Cost, Debt securities available for sale, Maturity After 10 Years | 22,230
Amortized Cost, Debt securities available for sale, Total | 23,966
Amortized Cost, Debt securities held to maturity, Maturity of 1 Year or Less | 0
Amortized Cost, Debt securities held to maturity, Maturity of 1-5 Years | 0
Amortized Cost, Debt securities held to maturity, Maturity of 5-10 Years | 0
Amortized Cost, Debt securities held to maturity, Maturity After 10 Years | 2,139
Amortized Cost, Debt securities held to maturity, Total | 2,139
Fair value: |
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less | 2
Fair Value, Debt securities available for sale, Maturity of 1-5 Years | 111
Fair Value, Debt securities available for sale, Maturity of 5-10 Years | 1,676
Fair Value, Debt securities available for sale, Maturity After 10 Years | 22,324
Fair Value, Debt securities available for sale, Total | 24,113
Fair Value, Debt securities held to maturity, Maturity of 1 Year or Less | 0
Fair Value, Debt securities held to maturity, Maturity of 1-5 Years | 0
Fair Value, Debt securities held to maturity, Maturity of 5-10 Years |
Fair Value, Debt securities held to maturity, Maturity After 10 Years | 2,223
Fair Value, Debt securities held to maturity, Total | 2,223
Other/non-agency |
Amortized cost: |
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less | 0
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years | 0
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years | 0
Amortized Cost, Debt securities available for sale, Maturity After 10 Years | 324
Amortized Cost, Debt securities available for sale, Total | 324
Fair value: |
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less | 0
Fair Value, Debt securities available for sale, Maturity of 1-5 Years | 0
Fair Value, Debt securities available for sale, Maturity of 5-10 Years | 0
Fair Value, Debt securities available for sale, Maturity After 10 Years | 340
Fair Value, Debt securities available for sale, Total | 340
Asset-backed securities |
Amortized cost: |
Amortized Cost, Debt securities held to maturity, Maturity of 1 Year or Less | 0
Amortized Cost, Debt securities held to maturity, Maturity of 1-5 Years | 0
Amortized Cost, Debt securities held to maturity, Maturity of 5-10 Years | 856
Amortized Cost, Debt securities held to maturity, Maturity After 10 Years | 0
Amortized Cost, Debt securities held to maturity, Total | 856
Fair value: |
Fair Value, Debt securities held to maturity, Maturity of 1 Year or Less | 0
Fair Value, Debt securities held to maturity, Maturity of 1-5 Years | 0
Fair Value, Debt securities held to maturity, Maturity of 5-10 Years | 854
Fair Value, Debt securities held to maturity, Maturity After 10 Years | 0
Fair Value, Debt securities held to maturity, Total | $ 854

X
- Definition Amount of investment in available for sale and held-to-maturity debt securities maturing in the fifth through tenth fiscal year following the latest fiscal year. + References No definition available. + Details
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- Definition Amount of investment in available for sale and held-to-maturity debt securities maturing in the next fiscal year through the fifth fiscal year following the latest fiscal year. + References No definition available. + Details
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- Definition Amount of investment in available for sale and held-to-maturity debt securities maturing in the next fiscal year following the latest fiscal year. + References No definition available. + Details
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- Definition Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120252992&loc=d3e62586-112803 + Details
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