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Supplemental Guarantor Information - Consolidating Balance Sheets (Details) - USD ($) $ in Millions | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Cash and cash equivalents | $ 1,007.8 | $ 1,303.2 | $ 1,383.8 | $ 661.8
Investments in subsidiaries | 0.0 | 0.0 |  |
Deferred income taxes | 365.0 | 476.3 |  |
Property and equipment, net | 325.0 | 195.4 |  |
Other assets | 573.1 | 499.6 |  |
Intercompany receivables | 0.0 | 0.0 |  |
Total assets | 12,184.6 | 11,558.9 |  |
LIABILITIES & EQUITY |  |  |  |
Accounts payable and other liabilities | 1,565.4 | 1,494.6 |  |
Intercompany payables | 0.0 | 0.0 |  |
Notes payable | 2,871.6 | 3,271.3 |  |
Total liabilities | 4,437.0 | 4,765.9 |  |
Total stockholders' equity | 7,747.1 | 6,792.5 |  |
Noncontrolling interests | 0.5 | 0.5 |  |
Total equity | 7,747.6 | 6,793.0 | 5,895.4 | 5,119.7
Total liabilities and equity | 12,184.6 | 11,558.9 |  |
Consolidation, Eliminations [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 0.0 | 0.0 | 0.0 | 0.0
Investments in subsidiaries | (4,812.6) | (4,118.6) |  |
Property and equipment, net | (5.8) | (5.2) |  |
Other assets | 0.0 | 0.0 |  |
Intercompany receivables | (1,047.7) | (1,604.5) |  |
Total assets | (5,866.1) | (5,728.3) |  |
LIABILITIES & EQUITY |  |  |  |
Accounts payable and other liabilities | (2.0) | (1.8) |  |
Intercompany payables | (1,047.7) | (1,604.5) |  |
Notes payable | 0.0 | 0.0 |  |
Total liabilities | (1,049.7) | (1,606.3) |  |
Total stockholders' equity | (4,816.4) | (4,122.0) |  |
Noncontrolling interests | 0.0 | 0.0 |  |
Total equity | (4,816.4) | (4,122.0) |  |
Total liabilities and equity | (5,866.1) | (5,728.3) |  |
D.R Horton, Inc. [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 780.9 | 1,076.4 | 1,217.7 | 497.4
Investments in subsidiaries | 4,812.6 | 4,118.6 |  |
Property and equipment, net | 104.8 | 72.0 |  |
Other assets | 245.5 | 168.7 |  |
Intercompany receivables | 1,047.7 | 1,604.5 |  |
Total assets | 10,678.2 | 10,029.0 |  |
LIABILITIES & EQUITY |  |  |  |
Accounts payable and other liabilities | 483.9 | 444.1 |  |
Intercompany payables | 0.0 | 0.0 |  |
Notes payable | 2,443.4 | 2,789.0 |  |
Total liabilities | 2,927.3 | 3,233.1 |  |
Total stockholders' equity | 7,750.9 | 6,795.9 |  |
Noncontrolling interests | 0.0 | 0.0 |  |
Total equity | 7,750.9 | 6,795.9 |  |
Total liabilities and equity | 10,678.2 | 10,029.0 |  |
Guarantor Subsidiaries [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 154.5 | 154.0 | 94.6 | 89.5
Investments in subsidiaries | 0.0 | 0.0 |  |
Property and equipment, net | 59.7 | 49.9 |  |
Other assets | 259.7 | 274.2 |  |
Intercompany receivables | 0.0 | 0.0 |  |
Total assets | 6,358.9 | 6,300.0 |  |
LIABILITIES & EQUITY |  |  |  |
Accounts payable and other liabilities | 956.9 | 933.1 |  |
Intercompany payables | 732.2 | 1,417.1 |  |
Notes payable | 8.2 | 9.3 |  |
Total liabilities | 1,697.3 | 2,359.5 |  |
Total stockholders' equity | 4,661.6 | 3,940.5 |  |
Noncontrolling interests | 0.0 | 0.0 |  |
Total equity | 4,661.6 | 3,940.5 |  |
Total liabilities and equity | 6,358.9 | 6,300.0 |  |
Non-Guarantor Subsidiaries [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 72.4 | 72.8 | $ 71.5 | $ 74.9
Investments in subsidiaries | 0.0 | 0.0 |  |
Property and equipment, net | 166.3 | 78.7 |  |
Other assets | 67.9 | 56.7 |  |
Intercompany receivables | 0.0 | 0.0 |  |
Total assets | 1,013.6 | 958.2 |  |
LIABILITIES & EQUITY |  |  |  |
Accounts payable and other liabilities | 126.6 | 119.2 |  |
Intercompany payables | 315.5 | 187.4 |  |
Notes payable | 420.0 | 473.0 |  |
Total liabilities | 862.1 | 779.6 |  |
Total stockholders' equity | 151.0 | 178.1 |  |
Noncontrolling interests | 0.5 | 0.5 |  |
Total equity | 151.5 | 178.6 |  |
Total liabilities and equity | 1,013.6 | 958.2 |  |
Financial Services [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 34.8 | 31.4 |  |
Restricted cash | 7.2 |  |  |
Property and equipment, net | 130.6 | 55.9 |  |
Other assets | 54.4 | 43.4 |  |
Mortgage loans held for sale | 587.3 | 654.0 |  |
Total assets | 807.1 | 784.7 |  |
LIABILITIES & EQUITY |  |  |  |
Total liabilities | 476.7 | 513.5 |  |
Financial Services [Member] | Consolidation, Eliminations [Member] |  |  |  |
ASSETS |  |  |  |
Mortgage loans held for sale | 0.0 | 0.0 |  |
Financial Services [Member] | D.R Horton, Inc. [Member] |  |  |  |
ASSETS |  |  |  |
Mortgage loans held for sale | 0.0 | 0.0 |  |
Financial Services [Member] | Guarantor Subsidiaries [Member] |  |  |  |
ASSETS |  |  |  |
Mortgage loans held for sale | 0.0 | 0.0 |  |
Financial Services [Member] | Non-Guarantor Subsidiaries [Member] |  |  |  |
ASSETS |  |  |  |
Mortgage loans held for sale | 587.3 | 654.0 |  |
Homebuilding [Member] |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 973.0 | 1,271.8 |  |
Restricted cash | 9.3 | 9.5 |  |
Inventories | 9,237.1 | 8,340.9 |  |
Deferred income taxes | 365.0 | 476.3 |  |
Property and equipment, net | 194.4 | 139.5 |  |
Other assets | 518.7 | 456.2 |  |
Goodwill | 80.0 | 80.0 |  |
Total assets | 11,377.5 | 10,774.2 |  |
LIABILITIES & EQUITY |  |  |  |
Notes payable | 2,451.6 | 2,798.3 |  |
Total liabilities | 3,960.3 | 4,252.4 |  |
Homebuilding [Member] | Consolidation, Eliminations [Member] |  |  |  |
ASSETS |  |  |  |
Restricted cash | 0.0 | 0.0 |  |
Inventories | 0.0 | 0.0 |  |
Deferred income taxes | 0.0 | 0.0 |  |
Goodwill | 0.0 | 0.0 |  |
Homebuilding [Member] | D.R Horton, Inc. [Member] |  |  |  |
ASSETS |  |  |  |
Restricted cash | 7.8 | 7.4 |  |
Inventories | 3,540.4 | 2,822.1 |  |
Deferred income taxes | 138.5 | 159.3 |  |
Goodwill | 0.0 | 0.0 |  |
Homebuilding [Member] | Guarantor Subsidiaries [Member] |  |  |  |
ASSETS |  |  |  |
Restricted cash | 1.5 | 2.1 |  |
Inventories | 5,579.9 | 5,425.7 |  |
Deferred income taxes | 223.6 | 314.1 |  |
Goodwill | 80.0 | 80.0 |  |
Homebuilding [Member] | Non-Guarantor Subsidiaries [Member] |  |  |  |
ASSETS |  |  |  |
Restricted cash | 0.0 | 0.0 |  |
Inventories | 116.8 | 93.1 |  |
Deferred income taxes | 2.9 | 2.9 |  |
Goodwill | $ 0.0 | $ 0.0 |  |

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- Definition Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(1),(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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