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Mortgage Servicing (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($) state | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Mortgage Servicing |  |  |
Interest earned on total escrows | $ 4,200 | $ 7,100 | $ 17,300
Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
Escrow Deposit | 1,990,000 | 1,290,000 |
MSRs |  |  |
Mortgage Servicing |  |  |
Unpaid principal balance of loans serviced | $ 26,959,389 | $ 24,628,456 |
Weighted average servicing fee (as a percent) | 0.449% | 0.454% |
MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 100.00% | 100.00% |
Escrow Deposit | $ 682,500 | $ 867,600 |
Texas | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 12.00% | 16.00% |
New York | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 11.00% | 9.00% |
North Carolina | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 9.00% | 9.00% |
California | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 8.00% | 9.00% |
Florida | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 6.00% | 7.00% |
Georgia | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 6.00% | 6.00% |
New Jersey | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 6.00% | 4.00% |
Other States | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 42.00% | 40.00% |
Number of states accounted for more than 4% of UPB and related servicing revenues | state | 0 |  |
Fannie Mae | MSRs |  |  |
Mortgage Servicing |  |  |
Unpaid principal balance of loans serviced | $ 19,127,397 | $ 18,268,268 |
Fannie Mae | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 71.00% | 74.00% |
Freddie Mac | MSRs |  |  |
Mortgage Servicing |  |  |
Unpaid principal balance of loans serviced | $ 4,943,905 | $ 4,881,080 |
Freddie Mac | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 18.00% | 20.00% |
Private Label | MSRs |  |  |
Mortgage Servicing |  |  |
Unpaid principal balance of loans serviced | $ 1,711,326 | $ 726,992 |
Private Label | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 6.00% | 3.00% |
FHA | MSRs |  |  |
Mortgage Servicing |  |  |
Unpaid principal balance of loans serviced | $ 985,063 | $ 752,116 |
FHA | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 4.00% | 3.00% |
SFR - Fixed Rate. | MSRs |  |  |
Mortgage Servicing |  |  |
Unpaid principal balance of loans serviced | $ 191,698 |  |
SFR - Fixed Rate. | MSRs | Fee-based servicing portfolio |  |  |
Mortgage Servicing |  |  |
UPB Percentage of Total | 1.00% |  |

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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 440 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629 + Details
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