Business and Basis of Presentation	12 Months Ended
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business and Basis of Presentation Disclosure	Business and Basis of Presentation As a result of Walter Investment Management Corp.'s emergence from bankruptcy under Chapter 11 of the Bankruptcy Code as discussed further below, on February 9, 2018 the Company changed its name to Ditech Holding Corporation. The terms “Ditech Holding” and the “Company,” as used throughout this report refer to Ditech Holding Corporation (successor) and/or Walter Investment Management Corp. (predecessor) and its consolidated subsidiaries. Ditech Holding and its subsidiaries is an independent servicer and originator of mortgage loans and servicer of reverse mortgage loans. Through the consumer, correspondent and wholesale lending channels, the Company originates and purchases residential mortgage loans that are predominantly sold to GSEs and government agencies. The Company services a wide array of loans across the credit spectrum for its own portfolio and for GSEs, government agencies, third-party securitization trusts and other credit owners. The Company also operates two complementary businesses: asset receivables management and real estate owned property management and disposition. The Company operates throughout the U.S. through three reportable segments, Servicing, Originations, and Reverse Mortgage. Refer to Note 28 for additional information related to segment reporting. Certain acronyms and terms used throughout these notes are defined in the Glossary of Terms in Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations. Restatement of Previously Issued Consolidated Financial Statements On August 9, 2017, the Company amended its Annual Report on Form 10-K for the year ended December 31, 2016 and separately amended its Quarterly Reports on Form 10-Q for the quarterly periods ended June 30, 2016, September 30, 2016, and March 31, 2017, in each case, to reflect a correction to the net deferred tax assets balance. The restatement of the Company's previously issued consolidated financial statements resulted from an error in the calculation of the valuation allowance on the net deferred tax assets balance. In determining the amount of the valuation allowance in the prior periods, an error was made that resulted in the double-counting of expected future taxable income associated with the projected reversals of taxable temporary differences (i.e., deferred tax liabilities). Accordingly, the Company revised its calculation to reflect the removal of the duplicative amounts, and reevaluated all sources of estimated future taxable income on the recoverability of deferred tax assets under GAAP after taking into account both positive and negative evidence through the issuance date of the restated financial statements to consider the effect of the error. The restated balances are reflected in these Consolidated Financial Statements. Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with GAAP. The consolidated financial statements include the accounts of Ditech Holding Corporation, its wholly-owned subsidiaries, and VIEs, of which the Company is the primary beneficiary. All significant intercompany balances and transactions have been eliminated. The results of operations for business combinations are included from their respective dates of acquisition. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Although management is not currently aware of any factors that would significantly change its estimates and assumptions, actual results may differ from these estimates. Changes in Presentation Certain prior year amounts have been reclassified to conform to current year presentation. Recent Accounting Guidance In May 2014, the FASB issued new revenue recognition guidance that supersedes most industry-specific guidance but does exclude insurance contracts and financial instruments. Under the new revenue recognition guidance, entities are required to identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when the entity satisfies a performance obligation. This guidance was effective for the Company beginning January 1, 2018. The Company adopted using the modified retrospective method. The Company has reviewed the scope of the guidance and monitored the determinations of the FASB Transition Resource Group and concluded that the Company's most significant revenue streams are not within the scope of the standard because the standard does not apply to revenue on contracts accounted for under the transfers and servicing of financial assets or financial instruments standards. Therefore, revenue recognition for these contracts will remain unchanged. The Company has determined that certain revenue streams are within the scope of the guidance; however, the Company does not expect the guidance to impact current revenue recognition patterns for these in scope revenue streams and contracts. Accordingly, the adoption of this guidance is not expected to have a significant impact on the consolidated financial statements. In January 2016, the FASB issued an accounting standards update that amends the guidance on the classification and measurement of financial instruments. The new standard revises an entity's accounting related to (i) the classification and measurement of investments in equity securities and (ii) the presentation of certain fair value changes for financial liabilities measured at fair value. It also amends certain disclosure requirements associated with the fair value of financial instruments. This guidance was effective for the Company beginning January 1, 2018. At December 31, 2017, the Company did not hold any equity securities measured at fair value, but did have certain financial liabilities measured at fair value. Accordingly, the adoption of this guidance is not expected to have a significant impact on the Company’s consolidated financial statements. In February 2016, the FASB issued an accounting standards update that requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous GAAP. A lessee should recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset to not recognize lease assets and lease liabilities. In transition, lessees are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach, which includes a number of optional practical expedients that entities may elect to apply. This guidance is effective for fiscal years beginning after December 15, 2018, with early application permitted. While the Company continues to evaluate the full effect that this guidance will have on its consolidated financial statements, it will result in the recognition of certain operating leases as right-of-use assets and lease liabilities on the consolidated balance sheets. In March 2016, the FASB issued an accounting standards update revising certain aspects of share-based accounting guidance, which includes income tax and forfeiture consequences. This guidance was effective for the Company beginning January 1, 2017. Adoption of this update did not have a material impact on the Company's income tax expense. The Company elected to continue with its current methodology of estimating expected forfeitures at the date of grant and adjust throughout the vesting term as needed. In June 2016, the FASB issued an accounting standards update that amends the guidance for recognizing credit losses on financial instruments measured at amortized cost. This update replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This guidance is effective for annual reporting periods, and interim periods within those annual periods, beginning after December 15, 2019. Based on the Company's current methodologies for accounting for financial instruments, the adoption of this guidance is not expected to have a material impact on its consolidated financial statements. The significance of the adoption of this guidance may change at the time of adoption based on the nature and composition of the Company's financial instruments at that time and the corresponding conclusions reached. In August 2016, the FASB issued an accounting standards update that amends the guidance on the classification of certain cash receipts and cash payments presented within the statement of cash flows to reduce the existing diversity in practice. This guidance was effective for the Company beginning January 1, 2018. The adoption may impact the presentation of cash flows, but will not otherwise have a material impact on the consolidated results of operations or financial condition. In October 2016, the FASB issued an accounting standards update that amends the guidance on the classification of income taxes related to the intra-entity transfer of assets other than inventory. This guidance was effective for the Company beginning January 1, 2018. The adoption of this guidance is not expected to have a significant impact on the consolidated financial statements. In November 2016, the FASB issued an accounting standards update that amends the guidance on restricted cash within the statement of cash flows. The update amends the classification of restricted cash and cash equivalents to be included within cash and cash equivalents when reconciling the beginning and ending cash amounts. As a result, entities will no longer present transfers between cash and cash equivalents and restricted cash and cash equivalents in the statement of cash flows. This guidance was effective for the Company beginning January 1, 2018. The adoption will impact the presentation of the cash flows, but will not otherwise have a material impact on the consolidated results of operations or financial condition. In January 2017, the FASB issued an accounting standards update that amends the guidance on business combinations. The update clarifies the definition of a business and provides a framework that gives entities a basis for making reasonable judgments about whether a transaction should be accounted for as an acquisition of assets or a business. This guidance was effective for the Company beginning January 1, 2018. The Company will apply this guidance to its assessment of applicable transactions, such as acquisitions and disposals of assets or businesses, consummated after the adoption date. As such, the adoption of this guidance is not expected to have a significant impact on the Company’s consolidated financial statements. In January 2017, the FASB issued an accounting standards update that amends the guidance on goodwill. Under the update, goodwill impairment is measured as the amount by which a reporting unit’s carrying value exceeds its fair value, while not exceeding the carrying value of goodwill. The update eliminates existing guidance that requires an entity to determine goodwill impairment by calculating the implied fair value of goodwill by hypothetically assigning the fair value of a reporting unit to all of its assets and liabilities as if that reporting unit had been acquired in a business combination. This guidance is effective for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019, with early adoption permitted. The Company is currently considering the timing of adoption and will apply this guidance to applicable impairment tests after the adoption date. In February 2017, the FASB issued an accounting standards update that amends the guidance on derecognition of nonfinancial assets. This guidance clarifies the scope and accounting of a financial asset that meets the definition of an in substance nonfinancial asset and defines the term in substance nonfinancial asset. It also adds guidance for partial sales of nonfinancial assets. This guidance was effective for the Company beginning January 1, 2018. The Company adopted using the modified retrospective method. The adoption of this guidance resulted in changes to the statement of financial position, including (i) a reduction of approximately $115.0 million in residential loans at amortized cost, net, (ii) an increase of approximately $125.0 million in other assets, (iii) an increase of approximately $40.0 million in accumulated deficit and (iv) an increase of approximately $50.0 million in accrued liabilities. Additionally, the pattern of recognition of certain interest payments will change for properties where the Company finances sales of real estate owned and the Company has determined that collection of substantially all consideration is not yet probable. In May 2017, the FASB issued an accounting standards update that amends the guidance on share-based compensation. The update provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. This guidance was effective for the Company beginning January 1, 2018. The new guidance will be applied prospectively to awards modified on or after the adoption date. As such, the adoption of this guidance is not expected to have a significant impact on the Company’s consolidated financial statements. In February 2018, the FASB issued an accounting standards update that amends the guidance on reporting comprehensive income. The guidance allows for a reclassification from accumulated other comprehensive income to retained earnings or accumulated deficit for stranded tax effects resulting from the Tax Act. The Company elected to early adopt this guidance, effective for the Company as of December 31, 2017. The adoption of this standard did not have a significant impact on the Company's consolidated financial statements or disclosures. Refer to Note 25 for additional information. In March 2018, the FASB issued an accounting standards update that provides guidance related to accounting for the income tax effects of the Tax Act. This guidance provides clarification to address situations where a registrant does not have the necessary information available, prepared, or analyzed in reasonable detail to complete the accounting under GAAP for certain income tax effects of the Tax Act. To the extent that a registrant's accounting for certain income tax effects of the Tax Act is incomplete, a reasonable estimate may be determined for those effects in the first reporting period in which the registrant was able to determine such reasonable estimate. A measurement period of one year from the enactment date of the Tax Act is provided whereby a registrant may adjust such provisional amounts. If a provisional amount cannot be determined in the initial period of enactment, the registrant may continue to account for taxes in accordance with tax laws that were in effect immediately prior to the Tax Act enactment date until such point in time that a reasonable estimate can be made. The Company's preliminary estimate of the Tax Act and the remeasurement of deferred tax assets and liabilities is subject to the finalization of management’s analysis related to certain matters, such as developing interpretations of the provisions of the Tax Act, changes to certain estimates and the filing of its tax returns. U.S. Treasury regulations, administrative interpretations or court decisions interpreting the Tax Act may require further adjustments and changes in the Company's estimates. The final determination of the Tax Act and the remeasurement of the Company's deferred assets and liabilities will be completed as additional information becomes available, but no later than one year from the enactment of the Tax Act.

Business and Basis of Presentation

As a result of Walter Investment Management Corp.'s emergence from bankruptcy under Chapter 11 of the Bankruptcy Code as discussed further below, on February 9, 2018 the Company changed its name to Ditech Holding Corporation. The terms “Ditech Holding” and the “Company,” as used throughout this report refer to Ditech Holding Corporation (successor) and/or Walter Investment Management Corp. (predecessor) and its consolidated subsidiaries. Ditech Holding and its subsidiaries is an independent servicer and originator of mortgage loans and servicer of reverse mortgage loans. Through the consumer, correspondent and wholesale lending channels, the Company originates and purchases residential mortgage loans that are predominantly sold to GSEs and government agencies. The Company services a wide array of loans across the credit spectrum for its own portfolio and for GSEs, government agencies, third-party securitization trusts and other credit owners. The Company also operates two complementary businesses: asset receivables management and real estate owned property management and disposition.

The Company operates throughout the U.S. through three reportable segments, Servicing, Originations, and Reverse Mortgage. Refer to Note 28 for additional information related to segment reporting.

Certain acronyms and terms used throughout these notes are defined in the Glossary of Terms in Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations.

Restatement of Previously Issued Consolidated Financial Statements

On August 9, 2017, the Company amended its Annual Report on Form 10-K for the year ended December 31, 2016 and separately amended its Quarterly Reports on Form 10-Q for the quarterly periods ended June 30, 2016, September 30, 2016, and March 31, 2017, in each case, to reflect a correction to the net deferred tax assets balance. The restatement of the Company's previously issued consolidated financial statements resulted from an error in the calculation of the valuation allowance on the net deferred tax assets balance. In determining the amount of the valuation allowance in the prior periods, an error was made that resulted in the double-counting of expected future taxable income associated with the projected reversals of taxable temporary differences (i.e., deferred tax liabilities). Accordingly, the Company revised its calculation to reflect the removal of the duplicative amounts, and reevaluated all sources of estimated future taxable income on the recoverability of deferred tax assets under GAAP after taking into account both positive and negative evidence through the issuance date of the restated financial statements to consider the effect of the error. The restated balances are reflected in these Consolidated Financial Statements.

Basis of Presentation

The accompanying consolidated financial statements have been prepared in accordance with GAAP. The consolidated financial statements include the accounts of Ditech Holding Corporation, its wholly-owned subsidiaries, and VIEs, of which the Company is the primary beneficiary. All significant intercompany balances and transactions have been eliminated. The results of operations for business combinations are included from their respective dates of acquisition.

Use of Estimates

The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Although management is not currently aware of any factors that would significantly change its estimates and assumptions, actual results may differ from these estimates.

Changes in Presentation

Certain prior year amounts have been reclassified to conform to current year presentation.

Recent Accounting Guidance

In May 2014, the FASB issued new revenue recognition guidance that supersedes most industry-specific guidance but does exclude insurance contracts and financial instruments. Under the new revenue recognition guidance, entities are required to identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when the entity satisfies a performance obligation. This guidance was effective for the Company beginning January 1, 2018. The Company adopted using the modified retrospective method. The Company has reviewed the scope of the guidance and monitored the determinations of the FASB Transition Resource Group and concluded that the Company's most significant revenue streams are not within the scope of the standard because the standard does not apply to revenue on contracts accounted for under the transfers and servicing of financial assets or financial instruments standards. Therefore, revenue recognition for these contracts will remain unchanged. The Company has determined that certain revenue streams are within the scope of the guidance; however, the Company does not expect the guidance to impact current revenue recognition patterns for these in scope revenue streams and contracts. Accordingly, the adoption of this guidance is not expected to have a significant impact on the consolidated financial statements.

In January 2016, the FASB issued an accounting standards update that amends the guidance on the classification and measurement of financial instruments. The new standard revises an entity's accounting related to (i) the classification and measurement of investments in equity securities and (ii) the presentation of certain fair value changes for financial liabilities measured at fair value. It also amends certain disclosure requirements associated with the fair value of financial instruments. This guidance was effective for the Company beginning January 1, 2018. At December 31, 2017, the Company did not hold any equity securities measured at fair value, but did have certain financial liabilities measured at fair value. Accordingly, the adoption of this guidance is not expected to have a significant impact on the Company’s consolidated financial statements.

In February 2016, the FASB issued an accounting standards update that requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous GAAP. A lessee should recognize in the statement of financial position a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset to not recognize lease assets and lease liabilities. In transition, lessees are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach, which includes a number of optional practical expedients that entities may elect to apply. This guidance is effective for fiscal years beginning after December 15, 2018, with early application permitted. While the Company continues to evaluate the full effect that this guidance will have on its consolidated financial statements, it will result in the recognition of certain operating leases as right-of-use assets and lease liabilities on the consolidated balance sheets.

In March 2016, the FASB issued an accounting standards update revising certain aspects of share-based accounting guidance, which includes income tax and forfeiture consequences. This guidance was effective for the Company beginning January 1, 2017. Adoption of this update did not have a material impact on the Company's income tax expense. The Company elected to continue with its current methodology of estimating expected forfeitures at the date of grant and adjust throughout the vesting term as needed.

In June 2016, the FASB issued an accounting standards update that amends the guidance for recognizing credit losses on financial instruments measured at amortized cost. This update replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. This guidance is effective for annual reporting periods, and interim periods within those annual periods, beginning after December 15, 2019. Based on the Company's current methodologies for accounting for financial instruments, the adoption of this guidance is not expected to have a material impact on its consolidated financial statements. The significance of the adoption of this guidance may change at the time of adoption based on the nature and composition of the Company's financial instruments at that time and the corresponding conclusions reached.

In August 2016, the FASB issued an accounting standards update that amends the guidance on the classification of certain cash receipts and cash payments presented within the statement of cash flows to reduce the existing diversity in practice. This guidance was effective for the Company beginning January 1, 2018. The adoption may impact the presentation of cash flows, but will not otherwise have a material impact on the consolidated results of operations or financial condition.

In October 2016, the FASB issued an accounting standards update that amends the guidance on the classification of income taxes related to the intra-entity transfer of assets other than inventory. This guidance was effective for the Company beginning January 1, 2018. The adoption of this guidance is not expected to have a significant impact on the consolidated financial statements.

In November 2016, the FASB issued an accounting standards update that amends the guidance on restricted cash within the statement of cash flows. The update amends the classification of restricted cash and cash equivalents to be included within cash and cash equivalents when reconciling the beginning and ending cash amounts. As a result, entities will no longer present transfers between cash and cash equivalents and restricted cash and cash equivalents in the statement of cash flows. This guidance was effective for the Company beginning January 1, 2018. The adoption will impact the presentation of the cash flows, but will not otherwise have a material impact on the consolidated results of operations or financial condition.

In January 2017, the FASB issued an accounting standards update that amends the guidance on business combinations. The update clarifies the definition of a business and provides a framework that gives entities a basis for making reasonable judgments about whether a transaction should be accounted for as an acquisition of assets or a business. This guidance was effective for the Company beginning January 1, 2018. The Company will apply this guidance to its assessment of applicable transactions, such as acquisitions and disposals of assets or businesses, consummated after the adoption date. As such, the adoption of this guidance is not expected to have a significant impact on the Company’s consolidated financial statements.

In January 2017, the FASB issued an accounting standards update that amends the guidance on goodwill. Under the update, goodwill impairment is measured as the amount by which a reporting unit’s carrying value exceeds its fair value, while not exceeding the carrying value of goodwill. The update eliminates existing guidance that requires an entity to determine goodwill impairment by calculating the implied fair value of goodwill by hypothetically assigning the fair value of a reporting unit to all of its assets and liabilities as if that reporting unit had been acquired in a business combination. This guidance is effective for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019, with early adoption permitted. The Company is currently considering the timing of adoption and will apply this guidance to applicable impairment tests after the adoption date.

In February 2017, the FASB issued an accounting standards update that amends the guidance on derecognition of nonfinancial assets. This guidance clarifies the scope and accounting of a financial asset that meets the definition of an in substance nonfinancial asset and defines the term in substance nonfinancial asset. It also adds guidance for partial sales of nonfinancial assets. This guidance was effective for the Company beginning January 1, 2018. The Company adopted using the modified retrospective method. The adoption of this guidance resulted in changes to the statement of financial position, including (i) a reduction of approximately $115.0 million in residential loans at amortized cost, net, (ii) an increase of approximately $125.0 million in other assets, (iii) an increase of approximately $40.0 million in accumulated deficit and (iv) an increase of approximately $50.0 million in accrued liabilities. Additionally, the pattern of recognition of certain interest payments will change for properties where the Company finances sales of real estate owned and the Company has determined that collection of substantially all consideration is not yet probable.

In May 2017, the FASB issued an accounting standards update that amends the guidance on share-based compensation. The update provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. This guidance was effective for the Company beginning January 1, 2018. The new guidance will be applied prospectively to awards modified on or after the adoption date. As such, the adoption of this guidance is not expected to have a significant impact on the Company’s consolidated financial statements.

In February 2018, the FASB issued an accounting standards update that amends the guidance on reporting comprehensive income. The guidance allows for a reclassification from accumulated other comprehensive income to retained earnings or accumulated deficit for stranded tax effects resulting from the Tax Act. The Company elected to early adopt this guidance, effective for the Company as of December 31, 2017. The adoption of this standard did not have a significant impact on the Company's consolidated financial statements or disclosures. Refer to Note 25 for additional information.

In March 2018, the FASB issued an accounting standards update that provides guidance related to accounting for the income tax effects of the Tax Act. This guidance provides clarification to address situations where a registrant does not have the necessary information available, prepared, or analyzed in reasonable detail to complete the accounting under GAAP for certain income tax effects of the Tax Act. To the extent that a registrant's accounting for certain income tax effects of the Tax Act is incomplete, a reasonable estimate may be determined for those effects in the first reporting period in which the registrant was able to determine such reasonable estimate. A measurement period of one year from the enactment date of the Tax Act is provided whereby a registrant may adjust such provisional amounts. If a provisional amount cannot be determined in the initial period of enactment, the registrant may continue to account for taxes in accordance with tax laws that were in effect immediately prior to the Tax Act enactment date until such point in time that a reasonable estimate can be made. The Company's preliminary estimate of the Tax Act and the remeasurement of deferred tax assets and liabilities is subject to the finalization of management’s analysis related to certain matters, such as developing interpretations of the provisions of the Tax Act, changes to certain estimates and the filing of its tax returns. U.S. Treasury regulations, administrative interpretations or court decisions interpreting the Tax Act may require further adjustments and changes in the Company's estimates. The final determination of the Tax Act and the remeasurement of the Company's deferred assets and liabilities will be completed as additional information becomes available, but no later than one year from the enactment of the Tax Act.