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Loss and Loss Adjustment Expense Reserves (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] |  |  |  |  |  |  |  |
Gross beginning balance | $ 999.6 | $ 751.9 | $ 894.7 | $ 696.0 |  |  |  |
Less: beginning reinsurance recoverable on unpaid losses | (396.0) | (447.5) | (428.9) | (433.4) |  |  |  |
Net loss and LAE reserves | 603.6 | 304.4 | 465.8 | 262.6 |  |  |  |
Loss and LAE incurred relating to: |  |  |  |  |  |  |  |
Current year losses | 143.2 | 61.6 | 268.9 | 127.1 |  |  |  |
Prior year losses | (22.7) | (9.0) | (26.4) | (8.5) |  |  |  |
Net incurred losses and LAE | 120.5 | 52.6 | 242.5 | 118.6 |  |  |  |
Loss and LAE paid relating to: |  |  |  |  |  |  |  |
Current year losses | (14.1) | (1.1) | (14.7) | (2.5) |  |  |  |
Prior year losses | (54.4) | (18.3) | (93.8) | (41.8) |  |  |  |
Net paid loss and LAE | (68.5) | (19.4) | (108.5) | (44.3) |  |  |  |
Change in TPC providers’ participation | 0.0 | 0.0 | 57.5 | (2.2) |  |  |  |
Foreign currency translation and other adjustments to loss and LAE reserves | (9.0) | (2.9) | (10.7) | 0.0 |  |  |  |
Net ending balance | 646.6 | 334.7 | 646.6 | 334.7 |  |  |  |
Plus: ending reinsurance recoverable on unpaid losses | 375.5 | 425.3 | 375.5 | 425.3 |  |  |  |
Gross ending balance | 1,022.1 | 760.0 | 1,022.1 | 760.0 |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |
Loss and loss adjustment expense reserves | 375.5 | 425.3 | 375.5 | 425.3 | $ 428.9 | $ 433.4 |  |
Ark |  |  |  |  |  |  |  |
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] |  |  |  |  |  |  |  |
Gross beginning balance |  |  | 894.7 |  |  |  |  |
Loss and LAE paid relating to: |  |  |  |  |  |  |  |
Gross ending balance | 1,022.1 |  | 1,022.1 |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |
Reinsurance recoverables | 398.7 | 431.3 | 398.7 | 431.3 | 448.4 |  |  |
TPC Providers | Ark |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |
Reinsurance recoverables | 182.4 |  | 182.4 |  |  |  |  |
TPC Providers |  |  |  |  |  |  |  |
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] |  |  |  |  |  |  |  |
Less: beginning reinsurance recoverable on unpaid losses | $ (207.3) | (331.0) | $ (276.8) | (319.2) |  |  |  |
Loss and LAE paid relating to: |  |  |  |  |  |  |  |
Plus: ending reinsurance recoverable on unpaid losses |  | 314.6 |  | 314.6 |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |
Loss and loss adjustment expense reserves |  | 314.6 |  | 314.6 | $ 276.8 | $ 319.2 |  |
Reinsurance recoverables |  | $ 314.6 |  | $ 314.6 |  |  |  |
Ark | TPC Providers |  |  |  |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |  |  |  |
Percent of underwriting capital provided by third parties |  |  |  |  |  | 42.80% | 58.30% | 57.60%

X
- Definition The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (cc) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 + Details
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- Definition Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(13)(a)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (cc) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=116884095&loc=d3e14764-158437 + Details
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