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SECURITIES - Schedule of Investments in Continuous Loss Positions (Details) $ in Millions | Jun. 30, 2018 USD ($) Securities | Dec. 31, 2017 USD ($) Securities
--- | --- | ---
Number of Issues |  |
Less than 12 Months | Securities | 445 | 300
12 Months or Longer | Securities | 165 | 162
Total | Securities | 610 | 462
Fair Value |  |
Less than 12 Months | $ 14,669 | $ 10,218
12 Months or Longer | 7,434 | 8,145
Total | 22,103 | 18,363
Gross Unrealized Losses |  |
Less than 12 Months | (437) | (98)
12 Months or Longer | (436) | (232)
Total | $ (873) | $ (330)
Federal agencies and U.S. government sponsored entities |  |
Number of Issues |  |
Less than 12 Months | Securities | 434 | 294
12 Months or Longer | Securities | 155 | 152
Total | Securities | 589 | 446
Fair Value |  |
Less than 12 Months | $ 14,384 | $ 10,163
12 Months or Longer | 7,358 | 8,061
Total | 21,742 | 18,224
Gross Unrealized Losses |  |
Less than 12 Months | (434) | (97)
12 Months or Longer | (430) | (226)
Total | $ (864) | $ (323)
Other/non-agency |  |
Number of Issues |  |
Less than 12 Months | Securities | 11 | 6
12 Months or Longer | Securities | 10 | 10
Total | Securities | 21 | 16
Fair Value |  |
Less than 12 Months | $ 285 | $ 55
12 Months or Longer | 76 | 84
Total | 361 | 139
Gross Unrealized Losses |  |
Less than 12 Months | (3) | (1)
12 Months or Longer | (6) | (6)
Total | $ (9) | $ (7)

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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 + Details
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