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Variable Interest Entity and Noncontrolling Interests - Other variable interest entity disclosures (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | $ 43,282,297 | $ 37,885,361 | $ 32,218,329
Total |  | 2,232,609 | 1,848,679 |
Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | 3,859,058 | 3,425,833 |
On-Balance Sheet (Asset) Liability |  | (7,969) | (5,197) |
Off-Balance Sheet |  | 56,320 | 42,084 |
Total |  | 48,351 | 36,887 |
Initial Coverage at Issuance |  | 5,909,497 |  |
Bellemeade 2017-1 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | 145,573 | 216,429 |
On-Balance Sheet (Asset) Liability |  | (245) | (442) |
Off-Balance Sheet |  | 844 | 2,794 |
Total |  | 599 | 2,352 |
Initial Coverage at Issuance | [1] | 368,114 |  |
Bellemeade 2018-1 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | 250,095 | 328,482 |
On-Balance Sheet (Asset) Liability |  | (903) | (1,574) |
Off-Balance Sheet |  | 2,245 | 5,757 |
Total |  | 1,342 | 4,183 |
Initial Coverage at Issuance | [2] | 374,460 |  |
Bellemeade 2018-2 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | 108,395 | 437,009 |
On-Balance Sheet (Asset) Liability |  | (138) | (877) |
Off-Balance Sheet |  | 280 | 2,524 |
Total |  | 142 | 1,647 |
Initial Coverage at Issuance | [3] | 653,278 |  |
Bellemeade 2018-3 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | 302,563 | 426,806 |
On-Balance Sheet (Asset) Liability |  | (1,320) | (1,113) |
Off-Balance Sheet |  | 3,262 | 3,937 |
Total |  | 1,942 | 2,824 |
Initial Coverage at Issuance | [4] | 506,110 |  |
Bellemeade 2019-1 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | 219,256 | 257,358 |
On-Balance Sheet (Asset) Liability |  | (1,361) | (226) |
Off-Balance Sheet |  | 8,461 | 3,027 |
Total |  | 7,100 | 2,801 |
Initial Coverage at Issuance | [5] | 341,790 |  |
Bellemeade 2019-2 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | 398,316 | 525,959 |
On-Balance Sheet (Asset) Liability |  | (730) | (78) |
Off-Balance Sheet |  | 5,201 | 2,579 |
Total |  | 4,471 | 2,501 |
Initial Coverage at Issuance | [6] | 621,022 |  |
Bellemeade 2019-3 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | 528,084 | 656,523 |
On-Balance Sheet (Asset) Liability |  | (861) | (585) |
Off-Balance Sheet |  | 5,079 | 9,273 |
Total |  | 4,218 | 8,688 |
Initial Coverage at Issuance | [7] | 700,920 |  |
Bellemeade 2019-4 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets |  | 468,737 | 577,267 |
On-Balance Sheet (Asset) Liability |  | (890) | (302) |
Off-Balance Sheet |  | 6,676 | 12,193 |
Total |  | 5,786 | $ 11,891 |
Initial Coverage at Issuance | [8] | 577,267 |  |
Bellemeade 2020-1 Ltd. | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets | [9] | 275,068 |  |
On-Balance Sheet (Asset) Liability | [9] | (178) |  |
Off-Balance Sheet | [9] | 1,012 |  |
Total | [9] | 834 |  |
Initial Coverage at Issuance | [10] | 528,540 |  |
Bellemeade 2020-1 Ltd. | Directly provided capacity | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Initial Coverage at Issuance |  | 79,000 |  |
Bellemeade 2020-2 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets | [11] | 423,420 |  |
On-Balance Sheet (Asset) Liability | [11] | (556) |  |
Off-Balance Sheet | [11] | 6,839 |  |
Total | [11] | 6,283 |  |
Initial Coverage at Issuance | [12] | 449,167 |  |
Bellemeade 2020-2 Ltd | Directly provided capacity | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Initial Coverage at Issuance |  | 26,000 |  |
Bellemeade 2020-3 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets | [13] | 418,158 |  |
On-Balance Sheet (Asset) Liability | [13] | (631) |  |
Off-Balance Sheet | [13] | 9,605 |  |
Total | [13] | 8,974 |  |
Initial Coverage at Issuance | [14] | 451,816 |  |
Bellemeade 2020-3 Ltd | Directly provided capacity | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Initial Coverage at Issuance |  | 34,000 |  |
Bellemeade 2020-4 Ltd | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Total VIE Assets | [15] | 321,393 |  |
On-Balance Sheet (Asset) Liability | [15] | (156) |  |
Off-Balance Sheet | [15] | 6,816 |  |
Total | [15] | 6,660 |  |
Initial Coverage at Issuance | [16] | 337,013 |  |
Bellemeade 2020-4 Ltd | Directly provided capacity | Variable Interest Entity, Not Primary Beneficiary |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Initial Coverage at Issuance |  | $ 16,000 |  |
[1] | Issued in October 2017, covering in-force policies issued between January 1, 2017 and June 30, 2017.
[2] | Issued in April 2018, covering in-force policies issued between July 1, 2017 and December 31, 2017.
[3] | Issued in August 2018, covering in-force policies issued between April 1, 2013 and December 31, 2015.
[4] | Issued in October 2018, covering in-force policies issued between January 1, 2018 and June 30, 2018.
[5] | Issued in March 2019, covering in-force policies primarily issued between 2005 to 2008 under United Guaranty Residential Insurance Company (“UGRIC”); as well as policies issued through 2015 under both UGRIC and Arch Mortgage Insurance Company.
[6] | Issued in April 2019, covering in-force policies issued between July 1, 2018 and December 31, 2018.
[7] | Issued in July 2019, covering in-force policies issued in 2016.
[8] | Issued in October 2019, covering in-force policies issued between January 1, 2019 and June 30, 2019.
[9] | An additional $79 million capacity was provided directly to Arch MI U.S. by a separate panel of reinsurers and is not reflected in this table
[10] | Issued in June 2020, covering in-force policies issued between July 1, 2019 and December 31, 2019. $450 million was directly funded by Bellemeade 2020-1 Ltd. with an additional $79 million of capacity provided directly to Arch MI U.S. by a separate panel of reinsurers
[11] | An additional $26 million capacity was provided directly to Arch MI U.S. by a separate panel of reinsurers and is not reflected in this table
[12] | Issued in September 2020, covering in-force policies issued between January 1, 2020 and May 31, 2020. $423 million was directly funded by Bellemeade 2020-2 Ltd. with an additional $26 million of capacity provided directly to Arch MI U.S. by a separate panel of reinsurers
[13] | An additional $34 million capacity was provided directly to Arch MI U.S. by a separate panel of reinsurers and is not reflected in this table
[14] | Issued in November 2020, covering in-force policies issued between June 1, 2020 and August 31, 2020. $418 million was directly funded by Bellemeade 2020-3 Ltd. with an additional $34 million of capacity provided directly to Arch MI U.S. by a separate panel of reinsurers.
[15] | An additional $16 million capacity was provided directly to Arch MI U.S. by a separate panel of reinsurers and is not reflected in this tabl
[16] | Issued in December 2020, covering in-force policies issued between July 1, 2019 and December 31, 2019. $321 million was directly funded by Bellemeade 2020-4 Ltd. with an additional $16 million of capacity provided directly to Arch MI U.S. by a separate panel of reinsurers

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