Basis of Presentation	9 Months Ended
Jun. 30, 2017
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 has subsidiaries that engage in other business activities. These subsidiaries conduct insurance-related operations, construct and own income-producing rental properties, own non-residential real estate including ranch land and improvements and own and operate 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 statements of operations for the three and nine months ended June 30, 2016 reflect the reclassification of $1.1 million and $3.6 million, respectively, of general and administrative expenses and $1.9 million and $5.6 million, respectively, 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. 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 $40.8 million and $40.5 million at June 30, 2017 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 and nine months ended June 30, 2017 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2017 or subsequent periods. Business Acquisition On June 29, 2017, the Company entered into an Agreement and Plan of Merger (Merger Agreement) with Forestar Group Inc., a Delaware corporation (Forestar), and a wholly owned subsidiary of the Company. Forestar is a publicly-traded residential real estate development company. Under the terms of the Merger Agreement, for each share of Forestar common stock, stockholders will have the right to receive $17.75 per share in cash, or retain such share of the surviving entity (Forestar Successor). Cash and stock elections will be prorated, as appropriate, such that 75% of the shares of Forestar common stock outstanding before the merger are converted into $17.75 per share or approximately $560 million of total cash consideration. Following the merger, the Company will own 75% of the outstanding Forestar Successor shares, and existing stockholders will own 25% of the outstanding Forestar Successor shares. Following the merger, Forestar will remain a public company, and its common stock will continue to trade on the NYSE under the symbol “FOR.” The transaction is expected to close during the Company’s first quarter of fiscal 2018, subject to the approval of Forestar shareholders and other customary closing conditions. 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 currently plans to adopt this standard using the modified retrospective method and is continuing to evaluate its effect. 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 in determining 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 statements of 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. In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other.” The guidance simplifies the measurement of goodwill impairment by removing the second step of the goodwill impairment test, which requires the determination of the fair value of individual assets and liabilities of a reporting unit. Under the new guidance, goodwill impairment is measured as the amount by which a reporting unit’s carrying amount exceeds its fair value with the loss recognized limited to the total amount of goodwill allocated to the reporting unit. 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 May 2017, the FASB issued ASU 2017-09, “Compensation - Stock Compensation: Scope of Modification Accounting,” which clarifies which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. Under the new guidance, modification accounting is required if the fair value, vesting conditions or classification (equity or liability) of the new award are different from the original award immediately before the original award is modified. The guidance is effective for the Company beginning October 1, 2018 and will not 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 has subsidiaries that engage in other business activities. These subsidiaries conduct insurance-related operations, construct and own income-producing rental properties, own non-residential real estate including ranch land and improvements and own and operate 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 statements of operations for the three and nine months ended June 30, 2016 reflect the reclassification of $1.1 million and $3.6 million, respectively, of general and administrative expenses and $1.9 million and $5.6 million, respectively, 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.

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 $40.8 million and $40.5 million at June 30, 2017 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 and nine months ended June 30, 2017 are not necessarily indicative of the results that may be expected for the fiscal year ending September 30, 2017 or subsequent periods.

Business Acquisition

On June 29, 2017, the Company entered into an Agreement and Plan of Merger (Merger Agreement) with Forestar Group Inc., a Delaware corporation (Forestar), and a wholly owned subsidiary of the Company. Forestar is a publicly-traded residential real estate development company. Under the terms of the Merger Agreement, for each share of Forestar common stock, stockholders will have the right to receive $17.75 per share in cash, or retain such share of the surviving entity (Forestar Successor). Cash and stock elections will be prorated, as appropriate, such that 75% of the shares of Forestar common stock outstanding before the merger are converted into $17.75 per share or approximately $560 million of total cash consideration. Following the merger, the Company will own 75% of the outstanding Forestar Successor shares, and existing stockholders will own 25% of the outstanding Forestar Successor shares. Following the merger, Forestar will remain a public company, and its common stock will continue to trade on the NYSE under the symbol “FOR.” The transaction is expected to close during the Company’s first quarter of fiscal 2018, subject to the approval of Forestar shareholders and other customary closing conditions.

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 currently plans to adopt this standard using the modified retrospective method and is continuing to evaluate its effect.

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 in determining 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 statements of 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.

In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other.” The guidance simplifies the measurement of goodwill impairment by removing the second step of the goodwill impairment test, which requires the determination of the fair value of individual assets and liabilities of a reporting unit. Under the new guidance, goodwill impairment is measured as the amount by which a reporting unit’s carrying amount exceeds its fair value with the loss recognized limited to the total amount of goodwill allocated to the reporting unit. 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 May 2017, the FASB issued ASU 2017-09, “Compensation - Stock Compensation: Scope of Modification Accounting,” which clarifies which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. Under the new guidance, modification accounting is required if the fair value, vesting conditions or classification (equity or liability) of the new award are different from the original award immediately before the original award is modified. The guidance is effective for the Company beginning October 1, 2018 and will not have a material impact on its consolidated financial position, results of operations or cash flows.