Basis of Presentation	3 Months Ended
Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION The accompanying unaudited, consolidated financial statements include the accounts of D.R. Horton, Inc. and all of its 100% owned, majority-owned and controlled subsidiaries (which are collectively referred to as the Company, unless the context otherwise requires). All intercompany accounts, transactions and balances have been eliminated in consolidation. The financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. In the opinion of management, these financial statements reflect all adjustments considered necessary to fairly state the results for the interim periods shown, including normal recurring accruals and other items. These financial statements, including the consolidated balance sheet as of September 30, 2016, which was derived from audited financial statements, do not include all of the information and notes required by GAAP for complete financial statements and should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s annual report on Form 10-K for the fiscal year ended September 30, 2016. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates. Reclassifications In addition to its core homebuilding and financial services operations, the Company owns subsidiaries that engage in other business activities. These other business activities include insurance-related operations, the construction and operation of rental real estate properties, investments in non-residential real estate including ranch land and improvements and the operation of oil and gas related assets. During the fourth quarter of fiscal 2016, the Company reclassified the assets, liabilities and operating results of these subsidiaries from the Homebuilding sections of its balance sheet and statement of operations to the Financial Services and Other sections. The statement of operations for the three months ended December 31, 2015 reflects the reclassification of $1.6 million of general and administrative expenses and $1.7 million of other income from the Homebuilding section to the Financial Services and Other section. These reclassifications had no effect on the Company’s consolidated financial position or results of operations. As other prior period financial information is presented in future filings, the Company will make similar reclassifications within the consolidated financial statements. Cash and Cash Equivalents The Company considers all highly liquid investments with an initial maturity of three months or less when purchased to be cash equivalents. Proceeds from home closings held for the Company’s benefit at title companies are included in homebuilding cash and cash equivalents in the consolidated balance sheets. Cash balances of the Company’s captive insurance subsidiary, which are expected to be used to fund the subsidiary’s operations and pay future anticipated legal claims, were $40.1 million and $40.5 million at December 31, 2016 and September 30, 2016, respectively, and are included in homebuilding cash and cash equivalents in the consolidated balance sheets. Seasonality Historically, the homebuilding industry has experienced seasonal fluctuations; therefore, the operating results for the three months ended December 31, 2016 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2017 or subsequent periods. Recent Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers,” which is a comprehensive new revenue recognition model that will replace most existing revenue recognition guidance. The core principle of this guidance is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The guidance is effective for the Company beginning October 1, 2018 and allows for full retrospective or modified retrospective methods of adoption. The Company is continuing to evaluate the effect of adopting ASU 2014-09 and the manner in which it will adopt the new standard. In July 2015, the FASB issued ASU 2015-11, “Simplifying the Measurement of Inventory,” which simplifies the subsequent measurement of inventory, excluding inventory measured using the last-in, first-out or retail inventory methods. The guidance specifies that inventory currently measured at the lower of cost or market, where market could be determined with different methods, should now be measured at the lower of cost or net realizable value. The guidance is effective for the Company beginning October 1, 2017 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments - Recognition and Measurement of Financial Assets and Financial Liabilities,” which addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. The guidance is effective for the Company beginning October 1, 2018 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows. In February 2016, the FASB issued ASU 2016-02, “Leases,” which requires that lease assets and liabilities be recognized on the balance sheet, and that key information about leasing arrangements be disclosed. The guidance is effective for the Company beginning October 1, 2019, although early adoption is permitted. The Company is currently evaluating the impact of this guidance on its consolidated financial position, results of operations and cash flows. In March 2016, the FASB issued ASU 2016-09, “Compensation - Stock Compensation,” which simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The guidance is effective for the Company beginning October 1, 2017 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses,” which replaces the current incurred loss impairment methodology 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. The guidance is effective for the Company beginning October 1, 2020 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments,” which amends and clarifies the current guidance to reduce diversity in practice of the classification of certain cash receipts and payments in the statement of cash flows. The guidance is effective for the Company beginning October 1, 2018 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows. In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows - Restricted Cash,” which requires amounts generally described as restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the total beginning and ending amounts for the periods shown on the statement of cash flows. The guidance is effective for the Company beginning October 1, 2018 and is not expected to have a material impact on its consolidated financial position or cash flows. In January 2017, the FASB issued ASU 2017-01, “Business Combinations - Clarifying the Definition of a Business,” which clarifies the definition of a business for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The guidance is effective for the Company beginning October 1, 2018 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows.

BASIS OF PRESENTATION

The accompanying unaudited, consolidated financial statements include the accounts of D.R. Horton, Inc. and all of its 100% owned, majority-owned and controlled subsidiaries (which are collectively referred to as the Company, unless the context otherwise requires). All intercompany accounts, transactions and balances have been eliminated in consolidation. The financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. In the opinion of management, these financial statements reflect all adjustments considered necessary to fairly state the results for the interim periods shown, including normal recurring accruals and other items. These financial statements, including the consolidated balance sheet as of September 30, 2016, which was derived from audited financial statements, do not include all of the information and notes required by GAAP for complete financial statements and should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s annual report on Form 10-K for the fiscal year ended September 30, 2016.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates.

Reclassifications

In addition to its core homebuilding and financial services operations, the Company owns subsidiaries that engage in other business activities. These other business activities include insurance-related operations, the construction and operation of rental real estate properties, investments in non-residential real estate including ranch land and improvements and the operation of oil and gas related assets. During the fourth quarter of fiscal 2016, the Company reclassified the assets, liabilities and operating results of these subsidiaries from the Homebuilding sections of its balance sheet and statement of operations to the Financial Services and Other sections. The statement of operations for the three months ended December 31, 2015 reflects the reclassification of $1.6 million of general and administrative expenses and $1.7 million of other income from the Homebuilding section to the Financial Services and Other section. These reclassifications had no effect on the Company’s consolidated financial position or results of operations. As other prior period financial information is presented in future filings, the Company will make similar reclassifications within the consolidated financial statements.

Cash and Cash Equivalents

The Company considers all highly liquid investments with an initial maturity of three months or less when purchased to be cash equivalents. Proceeds from home closings held for the Company’s benefit at title companies are included in homebuilding cash and cash equivalents in the consolidated balance sheets.

Cash balances of the Company’s captive insurance subsidiary, which are expected to be used to fund the subsidiary’s operations and pay future anticipated legal claims, were $40.1 million and $40.5 million at December 31, 2016 and September 30, 2016, respectively, and are included in homebuilding cash and cash equivalents in the consolidated balance sheets.

Seasonality

Historically, the homebuilding industry has experienced seasonal fluctuations; therefore, the operating results for the three months ended December 31, 2016 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2017 or subsequent periods.

Recent Accounting Pronouncements

In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers,” which is a comprehensive new revenue recognition model that will replace most existing revenue recognition guidance. The core principle of this guidance is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. The guidance is effective for the Company beginning October 1, 2018 and allows for full retrospective or modified retrospective methods of adoption. The Company is continuing to evaluate the effect of adopting ASU 2014-09 and the manner in which it will adopt the new standard.

In July 2015, the FASB issued ASU 2015-11, “Simplifying the Measurement of Inventory,” which simplifies the subsequent measurement of inventory, excluding inventory measured using the last-in, first-out or retail inventory methods. The guidance specifies that inventory currently measured at the lower of cost or market, where market could be determined with different methods, should now be measured at the lower of cost or net realizable value. The guidance is effective for the Company beginning October 1, 2017 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows.

In January 2016, the FASB issued ASU 2016-01, “Financial Instruments - Recognition and Measurement of Financial Assets and Financial Liabilities,” which addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. The guidance is effective for the Company beginning October 1, 2018 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows.

In February 2016, the FASB issued ASU 2016-02, “Leases,” which requires that lease assets and liabilities be recognized on the balance sheet, and that key information about leasing arrangements be disclosed. The guidance is effective for the Company beginning October 1, 2019, although early adoption is permitted. The Company is currently evaluating the impact of this guidance on its consolidated financial position, results of operations and cash flows.

In March 2016, the FASB issued ASU 2016-09, “Compensation - Stock Compensation,” which simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The guidance is effective for the Company beginning October 1, 2017 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows.

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses,” which replaces the current incurred loss impairment methodology 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. The guidance is effective for the Company beginning October 1, 2020 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows.

In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments,” which amends and clarifies the current guidance to reduce diversity in practice of the classification of certain cash receipts and payments in the statement of cash flows. The guidance is effective for the Company beginning October 1, 2018 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows.

In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows - Restricted Cash,” which requires amounts generally described as restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the total beginning and ending amounts for the periods shown on the statement of cash flows. The guidance is effective for the Company beginning October 1, 2018 and is not expected to have a material impact on its consolidated financial position or cash flows.

In January 2017, the FASB issued ASU 2017-01, “Business Combinations - Clarifying the Definition of a Business,” which clarifies the definition of a business for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The guidance is effective for the Company beginning October 1, 2018 and is not expected to have a material impact on its consolidated financial position, results of operations or cash flows.