Significant Accounting Policies (Policies)	6 Months Ended
Jun. 30, 2025
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited, consolidated financial statements of Navient have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete consolidated financial statements. The consolidated financial statements include the accounts of Navient and its majority-owned and controlled subsidiaries and those Variable Interest Entities (VIEs) for which we are the primary beneficiary, after eliminating the effects of intercompany accounts and transactions. In the opinion of management, all adjustments considered necessary for a fair statement of the results for the interim periods have been included. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Operating results for the three and six months ended June 30, 2025 are not necessarily indicative of the results for the year ending December 31, 2025 or for any other period. These unaudited financial statements should be read in conjunction with the audited financial statements and related notes included in our 2024 Form 10-K. Definitions for certain capitalized terms used but not otherwise defined in this Form 10-Q can be found in our 2024 Form 10-K.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Income Taxes In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes – Improvements to Income Tax Disclosures,” which requires companies to disclose additional information in specified categories regarding reconciliation of the effective tax rate to the statutory rate for federal, state, and foreign income taxes. The ASU also eliminates certain existing disclosure requirements related to uncertain tax positions and unrecognized deferred tax liabilities.

Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2025

The accompanying unaudited, consolidated financial statements of Navient have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for complete consolidated financial statements. The consolidated financial statements include the accounts of Navient and its majority-owned and controlled subsidiaries and those Variable Interest Entities (VIEs) for which we are the primary beneficiary, after eliminating the effects of intercompany accounts and transactions. In the opinion of management, all adjustments considered necessary for a fair statement of the results for the interim periods have been included. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Operating results for the three and six months ended June 30, 2025 are not necessarily indicative of the results for the year ending December 31, 2025 or for any other period. These unaudited financial statements should be read in conjunction with the audited financial statements and related notes included in our 2024 Form 10-K. Definitions for certain capitalized terms used but not otherwise defined in this Form 10-Q can be found in our 2024 Form 10-K.

Recently Issued Accounting Pronouncements

Income Taxes

In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes – Improvements to Income Tax Disclosures,” which requires companies to disclose additional information in specified categories regarding reconciliation of the effective tax rate to the statutory rate for federal, state, and foreign income taxes. The ASU also eliminates certain existing disclosure requirements related to uncertain tax positions and unrecognized deferred tax liabilities.