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REGULATORY MATTERS (Tables) | 6 Months Ended
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Jun. 30, 2018
Banking and Thrift [Abstract] |
Schedule of compliance with regulatory capital requirements under banking regulations | The following table presents the Company’s capital and capital ratios under U.S. Basel III Standardized rules. The Company has declared itself as an “AOCI opt-out” institution, which means the Company is not required to recognize in regulatory capital the impacts of net unrealized gains and losses included within AOCI for securities that are available for sale or held to maturity, accumulated net gains and losses on cash-flow hedges, and certain defined benefit pension plan assets.
|  |  |  |  |  |  | FDIA Requirements
| Actual |  | Minimum Capital Adequacy |  | Classification as Well-capitalized(6)
(in millions, except ratio data) | Amount |  | Ratio |  |  | Amount |  | Ratio(5) |  |  | Amount |  | Ratio |
June 30, 2018 |  |  |  |  |  |  |  |
Common equity tier 1 capital(1) |  | $14,604 |  | 11.2 | % |  |  | $8,327 |  | 6.375 | % |  |  | $8,490 |  | 6.5 | %
Tier 1 capital(2) | 15,147 |  | 11.6 |  |  | 10,286 |  | 7.875 |  |  | 10,450 |  | 8.0 |
Total capital(3) | 18,056 |  | 13.8 |  |  | 12,899 |  | 9.875 |  |  | 13,062 |  | 10.0 |
Tier 1 leverage(4) | 15,147 |  | 10.2 |  |  | 5,934 |  | 4.000 |  |  | 7,417 |  | 5.0 |
December 31, 2017 |  |  |  |  |  |  |  |
Common equity tier 1 capital(1) |  | $14,309 |  | 11.2 | % |  |  | $7,342 |  | 5.750 | % |  |  | $8,300 |  | 6.5 | %
Tier 1 capital(2) | 14,556 |  | 11.4 |  |  | 9,258 |  | 7.250 |  |  | 10,215 |  | 8.0 |
Total capital(3) | 17,781 |  | 13.9 |  |  | 11,812 |  | 9.250 |  |  | 12,769 |  | 10.0 |
Tier 1 leverage(4) | 14,556 |  | 10.0 |  |  | 5,824 |  | 4.000 |  |  | 7,280 |  | 5.0 |
(1) “Common equity tier 1 capital ratio” represents CET1 capital divided by total risk-weighted assets as defined under U.S. Basel III Standardized approach. (2) “Tier 1 capital ratio” is tier 1 capital, which includes CET1 capital plus non-cumulative perpetual preferred equity that qualifies as additional tier 1 capital, divided by total risk-weighted assets as defined under U.S. Basel III Standardized approach. (3) “Total capital ratio” is total capital divided by total risk-weighted assets as defined under U.S. Basel III Standardized approach. (4) “Tier 1 leverage ratio” is tier 1 capital divided by quarterly average total assets as defined under U.S. Basel III Standardized approach. (5) “Minimum Capital ratio” includes capital conservation buffer of 1.875% for 2018 and 1.250% for 2017; N/A to Tier 1 leverage. (6) Presented for informational purposes. Prompt corrective action provisions apply only to the Company’s insured depository institutions - CBNA and CBPA.

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958577-112826 + Details
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