General (Policies)	9 Months Ended
Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business In this report, when we refer to “the Company,” “us,” “we,” “our,” or “ours,” we are referring to Schneider National, Inc. and its subsidiaries. We are a leading transportation services organization headquartered in Green Bay, Wisconsin. We provide a broad portfolio of premier truckload, intermodal, and logistics solutions and operate one of the largest trucking fleets in North America.
Basis of Presentation	Basis of Presentation The accompanying unaudited interim Condensed Consolidated Financial Statements have been prepared in accordance with GAAP and the rules and regulations of the SEC applicable to quarterly reports on Form 10-Q. Therefore, these financial statements and footnotes do not include all disclosures required by GAAP for annual financial statements. These financial statements should be read in conjunction with the Consolidated Financial Statements and related notes included in our Prospectus. Financial results for an interim period are not necessarily indicative of the results for a full year. All intercompany transactions have been eliminated in consolidation. In the opinion of management, these statements reflect all adjustments (consisting only of normal recurring adjustments) necessary for the fair presentation of our financial results for the interim periods presented.
Accounting Standards Issued But Not Yet Adopted	Accounting Standards Issued But Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which is codified as ASC 606. This guidance outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. As amended, the new revenue recognition standard will be effective for us beginning with the reporting period ending March 31, 2018. The standard permits the use of either the full retrospective or modified retrospective transition method. We plan to use the modified retrospective approach for adoption, which requires us to record the cumulative effect of the transition through retained earnings as of January 1, 2018. While we are still in the process of completing our evaluation of the standard, we currently believe the most significant impact will be related to the timing of recognition of revenue for transportation services. We currently recognize revenue related to transportation services at delivery, but upon adoption of the standard, we will be required to recognize revenue over time. We have begun to quantify the differences in timing, measurement, and presentation of our revenue recognition. Based on our analysis to date, we do not expect this change or the adoption of ASC 606 to have an overall material impact on our consolidated financial position, results of operations, and cash flows. We are still evaluating the disclosure requirements of this standard. In January 2016, the FASB issued ASU 2016-01, Financial Instruments–Overall: Recognition and Measurement of Financial Assets and Financial Liabilities. This update was issued to enhance the reporting model for financial instruments regarding certain aspects of recognition, measurement, presentation, and disclosure. These provisions are effective for us beginning with the reporting period ending March 31, 2018, but we do not expect the adoption of this ASU to have an impact on our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases, which requires lessees to recognize in the consolidated balance sheets assets and liabilities for leases with lease terms of more than 12 months. Consistent with current accounting principles, the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance or operating lease. However, unlike current accounting principles, which require only capital leases to be recognized in the consolidated balance sheets, the new ASU will require both types of leases to be recognized in the consolidated balance sheets. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that companies may elect to apply. These practical expedients relate to the identification and classification of leases that commenced before the effective date, initial direct costs for leases that commenced before the effective date, and the ability to use hindsight in evaluating lessee options to extend or terminate a lease or to purchase the underlying asset. The transition guidance also provides specific guidance for sale and leaseback transactions, build-to-suit leases, leveraged leases, and amounts previously recognized in accordance with the business combinations guidance for leases. The new standard is effective for us beginning with the reporting period ending March 31, 2019, with early adoption permitted. We currently cannot reasonably estimate the impact that the adoption of this ASU will have on our consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, which requires companies to use a forward-looking, expected loss model to estimate credit losses on various types of financial assets and net investments in leases. It also requires additional disclosure related to credit quality of trade and other receivables, including information related to management’s estimate of credit allowances. This guidance is effective for us beginning with the reporting period ending March 31, 2020. We currently cannot reasonably estimate the impact that the adoption of this ASU will have on our consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments, which addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. Entities must apply the guidance retrospectively to all periods presented but may apply it prospectively if retrospective application would be impracticable. The provisions of this update are effective for us beginning with the reporting period ending March 31, 2018. Several of the changes to the presentation of items identified in the guidance could impact our classification on our cash flow statements, but the impact will be dependent on circumstances after adoption. In January 2017, the FASB issued ASU 2017-4, Intangibles—Goodwill and Other: Simplifying the Test for Goodwill Impairment, which eliminates Step 2 from the goodwill impairment testing process. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount. Under the new standard, a goodwill impairment loss is measured as the excess of the carrying value of a reporting unit over its fair value. The provisions of this update will be effective for our goodwill impairment test in 2020, but we plan to early-adopt this standard in the fourth quarter of 2017 for our annual goodwill impairment test.

Accounting Standards Issued But Not Yet Adopted

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which is codified as ASC 606. This guidance outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. As amended, the new revenue recognition standard will be effective for us beginning with the reporting period ending March 31, 2018. The standard permits the use of either the full retrospective or modified retrospective transition method. We plan to use the modified retrospective approach for adoption, which requires us to record the cumulative effect of the transition through retained earnings as of January 1, 2018. While we are still in the process of completing our evaluation of the standard, we currently believe the most significant impact will be related to the timing of recognition of revenue for transportation services. We currently recognize revenue related to transportation services at delivery, but upon adoption of the standard, we will be required to recognize revenue over time. We have begun to quantify the differences in timing, measurement, and presentation of our revenue recognition. Based on our analysis to date, we do not expect this change or the adoption of ASC 606 to have an overall material impact on our consolidated financial position, results of operations, and cash flows. We are still evaluating the disclosure requirements of this standard.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments–Overall: Recognition and Measurement of Financial Assets and Financial Liabilities. This update was issued to enhance the reporting model for financial instruments regarding certain aspects of recognition, measurement, presentation, and disclosure. These provisions are effective for us beginning with the reporting period ending March 31, 2018, but we do not expect the adoption of this ASU to have an impact on our consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases, which requires lessees to recognize in the consolidated balance sheets assets and liabilities for leases with lease terms of more than 12 months. Consistent with current accounting principles, the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance or operating lease. However, unlike current accounting principles, which require only capital leases to be recognized in the consolidated balance sheets, the new ASU will require both types of leases to be recognized in the consolidated balance sheets. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that companies may elect to apply. These practical expedients relate to the identification and classification of leases that commenced before the effective date, initial direct costs for leases that commenced before the effective date, and the ability to use hindsight in evaluating lessee options to extend or terminate a lease or to purchase the underlying asset. The transition guidance also provides specific guidance for sale and leaseback transactions, build-to-suit leases, leveraged leases, and amounts previously recognized in accordance with the business combinations guidance for leases. The new standard is effective for us beginning with the reporting period ending March 31, 2019, with early adoption permitted. We currently cannot reasonably estimate the impact that the adoption of this ASU will have on our consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, which requires companies to use a forward-looking, expected loss model to estimate credit losses on various types of financial assets and net investments in leases. It also requires additional disclosure related to credit quality of trade and other receivables, including information related to management’s estimate of credit allowances. This guidance is effective for us beginning with the reporting period ending March 31, 2020. We currently cannot reasonably estimate the impact that the adoption of this ASU will have on our consolidated financial statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments, which addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. Entities must apply the guidance retrospectively to all periods presented but may apply it prospectively if retrospective application would be impracticable. The provisions of this update are effective for us beginning with the reporting period ending March 31, 2018. Several of the changes to the presentation of items identified in the guidance could impact our classification on our cash flow statements, but the impact will be dependent on circumstances after adoption.

In January 2017, the FASB issued ASU 2017-4, Intangibles—Goodwill and Other: Simplifying the Test for Goodwill Impairment, which eliminates Step 2 from the goodwill impairment testing process. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount. Under the new standard, a goodwill impairment loss is measured as the excess of the carrying value of a reporting unit over its fair value. The provisions of this update will be effective for our goodwill impairment test in 2020, but we plan to early-adopt this standard in the fourth quarter of 2017 for our annual goodwill impairment test.