Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	15. Commitments and Contingencies Litigation and Regulatory The Company and its subsidiaries are routinely and currently involved in a number of legal proceedings, including, but not limited to, judicial, arbitration, regulatory and governmental proceedings related to matters that arise in connection with the conduct of the Company’s business. While it is not possible to predict the outcome of any of these matters, based on the Company’s assessment of the facts and circumstances, it does not believe any of these matters, individually or in the aggregate, will have a material adverse effect on the financial position, results of operations or cash flows of the Company. However, actual outcomes may differ from those expected and could have a material effect on our financial position, results of operations, or cash flows in a future period. On November 3, 2023, a putative class action lawsuit was filed against the Company, captioned Cabezas v. Mr. Cooper Group, Inc., No. 23-cv-02453 (“Cabezas”), in the United States District Court for the Northern District of Texas, by plaintiff Jennifer Cabezas purportedly on behalf of a class consisting of those persons impacted by the cybersecurity incident that occurred on October 31, 2023. The class action complaint alleges claims for negligence, negligence per se, breach of express contract, breach of implied contract, invasion of privacy, unjust enrichment, breach of confidence, and breach of fiduciary duty based upon allegations that the Company did not employ reasonable and adequate security measures to protect customer personal information accessed in the cybersecurity incident. The Cabezas complaint seeks damages, declaratory and injunctive relief, and an award of costs, attorney fees and expenses, among other relief. Between November 2023 and January 31, 2024, 25 additional putative class actions were filed against the Company asserting substantially similar claims and allegations as those asserted in the Cabezas action. The Cabezas court consolidated all 25 cases with the Cabezas action, and administratively closed the 25 separate matters. On February 7, 2024, a putative class action lawsuit was filed against the Company, captioned Randles v. Mr. Cooper Group, Inc. (“Randles”), in the United States District Court for the Eastern District of California, purportedly on behalf of persons residing in California who were impacted by the cybersecurity incident. The Randles complaint alleges one claim under the California Consumer Privacy Act, and seeks damages, declaratory and injunctive relief, and an award of litigation expenses and attorneys’ fees. The Company has moved to transfer venue of the Randles action to the same court where the Cabezas action is pending, so the cases can be consolidated. The Company will continue to monitor legal matters for further developments that could affect the amount of the accrued liability that has been previously established. Legal-related expenses for the Company include legal settlements and the fees paid to external legal service providers and are included in general and administrative expenses on the condensed consolidated statements of operations. The Company recorded legal-related expenses, net of recoveries, which includes legal settlements and fees paid to external legal service providers, of $12 and $9 during the three months ended March 31, 2024 and 2023, respectively, which are included in “expenses - general and administrative” on the condensed consolidated statements of operations. Management currently believes the aggregate range of reasonably possible loss is $1 to $3 in excess of the accrued liability (if any) related to those matters as of March 31, 2024. This estimated range of possible loss is based upon currently available information and is subject to significant judgment, numerous assumptions and known and unknown uncertainties. The matters underlying the estimated range will change from time to time, and actual results may vary substantially from the current estimate. Other Loss Contingencies As part of the Company’s ongoing operations, it acquires servicing rights of mortgage loan portfolios that are subject to indemnification based on the representations and warranties of the seller. From time to time, the Company will seek recovery under these representations and warranties for incurred costs. As of March 31, 2024, the Company believes all recorded balances for which recovery is sought from the seller are valid claims, and no evidence suggests additional reserves are warranted. As a seller of mortgage loans to Agencies and other third parties, the Company may be required to indemnify or repurchase mortgage loans that fail to meet certain customary representations and warranties made in conjunction with sales of mortgage loans. The repurchase reserve liability related to such customary representations and warranties was $76 and $79 as of March 31, 2024 and December 31, 2023, respectively, which are included in “payables and other liabilities” within the condensed consolidated balance sheets. Loan and Other Commitments The Company enters into IRLCs with prospective borrowers whereby the Company commits to lend a certain loan amount under specific terms and interest rates to the borrower. The Company also enters into LPCs with prospective sellers. These loan commitments are treated as derivatives and are carried at fair value. See Note 8, Derivative Financial Instruments, for more information.