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OTHER COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables) | 6 Months Ended
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Jun. 30, 2021
Equity [Abstract] |
Schedule of AOCI | The following table presents the changes in our accumulated other comprehensive income (loss), or AOCI, for the three and six months ended June 30, 2021 and 2020:
| Three Months Ended June 30, |  | Six Months Ended June 30, |  |
| 2021 |  | 2020 |  | 2021 |  | 2020 |  |
| (dollars in millions)
Change in net unrealized gains on investments: |  |  |  |  |  |  |  |  |
Accumulated other comprehensive income (loss) beginning balance | $ | 2.1 |  |  | $ | (1.2) |  |  | $ | 5.6 |  |  | $ | 0.6 |  |  |
Other comprehensive income (loss) before reclassifications | — |  |  | 6.8 |  |  | (1.1) |  |  | 5.0 |  |  |
Net realized gains on investments reclassified from AOCI to net loss | — |  |  | (0.1) |  |  | (2.4) |  |  | (0.1) |  |  |
Net current period other comprehensive income (loss) | — |  |  | 6.7 |  |  | (3.5) |  |  | 4.9 |  |  |
Accumulated other comprehensive income ending balance | $ | 2.1 |  |  | $ | 5.5 |  |  | $ | 2.1 |  |  | $ | 5.5 |  |  |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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