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Supplemental Guarantor Information (Details 1) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Financial Services [Abstract] |  |  |  |  |
Income before income taxes | [1] | $ 378.6 | $ 333.8 | $ 920.4 | $ 784.6
Income tax expense |  | 128.8 | 112.4 | 317.8 | 272.8
Net income |  | 249.8 | 221.4 | 602.6 | 511.8
Comprehensive income |  | 249.8 | 221.4 | 601.2 | 511.8
Homebuilding [Member] |  |  |  |  |
Homebuilding: |  |  |  |  |
Revenues |  | 3,148.8 | 2,876.4 | 8,210.8 | 7,468.0
Cost of sales |  | 2,523.0 | 2,320.4 | 6,584.3 | 6,026.9
Total gross profit |  | 625.8 | 556.0 | 1,626.5 | 1,441.1
Selling, general and administrative expense |  | 280.4 | 257.8 | 782.0 | 738.2
Equity in (income) of subsidiaries |  | 0.0 | 0.0 | 0.0 | 0.0
Other (income) |  | (3.8) | (3.9) | (16.8) | (13.9)
Financial Services [Abstract] |  |  |  |  |
Income before income taxes |  | 349.2 | 302.1 | 861.3 | 716.8
Financial Services [Member] |  |  |  |  |
Financial Services [Abstract] |  |  |  |  |
Revenues |  | 83.1 | 74.4 | 205.4 | 183.6
General and administrative expense |  | 56.4 | 46.0 | 153.5 | 124.6
Interest and other (income) |  | (2.7) | (3.3) | (7.2) | (8.8)
Income before income taxes |  | 29.4 | 31.7 | 59.1 | 67.8
D.R. Horton, Inc. [Member] |  |  |  |  |
Financial Services [Abstract] |  |  |  |  |
Income before income taxes |  | 381.3 | 333.8 | 925.6 | 784.6
Income tax expense |  | 130.6 | 112.4 | 319.6 | 272.8
Net income |  | 250.7 | 221.4 | 606.0 | 511.8
Comprehensive income |  | 250.7 | 221.4 | 604.6 | 511.8
D.R. Horton, Inc. [Member] | Homebuilding [Member] |  |  |  |  |
Homebuilding: |  |  |  |  |
Revenues |  | 1,040.8 | 890.5 | 2,700.7 | 2,314.4
Cost of sales |  | 836.9 | 718.0 | 2,170.5 | 1,865.6
Total gross profit |  | 203.9 | 172.5 | 530.2 | 448.8
Selling, general and administrative expense |  | 126.6 | 116.2 | 357.4 | 338.9
Equity in (income) of subsidiaries |  | (303.3) | (277.1) | (745.9) | (673.4)
Other (income) |  | (0.7) | (0.4) | (6.9) | (1.3)
Financial Services [Abstract] |  |  |  |  |
Income before income taxes |  | 381.3 | 333.8 | 925.6 | 784.6
D.R. Horton, Inc. [Member] | Financial Services [Member] |  |  |  |  |
Financial Services [Abstract] |  |  |  |  |
Revenues |  | 0.0 | 0.0 | 0.0 | 0.0
General and administrative expense |  | 0.0 | 0.0 | 0.0 | 0.0
Interest and other (income) |  | 0.0 | 0.0 | 0.0 | 0.0
Income before income taxes |  | 0.0 | 0.0 | 0.0 | 0.0
Guarantor Subsidiaries [Member] |  |  |  |  |
Financial Services [Abstract] |  |  |  |  |
Income before income taxes |  | 274.5 | 250.0 | 681.8 | 619.7
Income tax expense |  | 92.4 | 83.0 | 234.0 | 213.9
Net income |  | 182.1 | 167.0 | 447.8 | 405.8
Comprehensive income |  | 182.1 | 167.0 | 447.8 | 405.8
Guarantor Subsidiaries [Member] | Homebuilding [Member] |  |  |  |  |
Homebuilding: |  |  |  |  |
Revenues |  | 2,118.6 | 1,985.9 | 5,526.1 | 5,153.6
Cost of sales |  | 1,693.2 | 1,601.0 | 4,429.3 | 4,156.0
Total gross profit |  | 425.4 | 384.9 | 1,096.8 | 997.6
Selling, general and administrative expense |  | 151.5 | 135.5 | 418.4 | 381.0
Equity in (income) of subsidiaries |  | 0.0 | 0.0 | 0.0 | 0.0
Other (income) |  | (0.6) | (0.6) | (3.4) | (3.1)
Financial Services [Abstract] |  |  |  |  |
Income before income taxes |  | 274.5 | 250.0 | 681.8 | 619.7
Guarantor Subsidiaries [Member] | Financial Services [Member] |  |  |  |  |
Financial Services [Abstract] |  |  |  |  |
Revenues |  | 0.0 | 0.0 | 0.0 | 0.0
General and administrative expense |  | 0.0 | 0.0 | 0.0 | 0.0
Interest and other (income) |  | 0.0 | 0.0 | 0.0 | 0.0
Income before income taxes |  | 0.0 | 0.0 | 0.0 | 0.0
Non-Guarantor Subsidiaries [Member] |  |  |  |  |
Financial Services [Abstract] |  |  |  |  |
Income before income taxes |  | 28.8 | 27.1 | 64.1 | 53.7
Income tax expense |  | 10.8 | 10.3 | 23.9 | 20.6
Net income |  | 18.0 | 16.8 | 40.2 | 33.1
Comprehensive income |  | 18.0 | 16.8 | 40.2 | 33.1
Non-Guarantor Subsidiaries [Member] | Homebuilding [Member] |  |  |  |  |
Homebuilding: |  |  |  |  |
Revenues |  | 0.0 | 0.0 | 0.0 | 0.0
Cost of sales |  | 0.8 | 1.4 | (4.7) | 5.3
Total gross profit |  | (0.8) | (1.4) | 4.7 | (5.3)
Selling, general and administrative expense |  | 2.3 | 6.1 | 6.2 | 18.3
Equity in (income) of subsidiaries |  | 0.0 | 0.0 | 0.0 | 0.0
Other (income) |  | (2.5) | (2.9) | (6.5) | (9.5)
Financial Services [Abstract] |  |  |  |  |
Income before income taxes |  | (0.6) | (4.6) | 5.0 | (14.1)
Non-Guarantor Subsidiaries [Member] | Financial Services [Member] |  |  |  |  |
Financial Services [Abstract] |  |  |  |  |
Revenues |  | 83.1 | 74.4 | 205.4 | 183.6
General and administrative expense |  | 56.4 | 46.0 | 153.5 | 124.6
Interest and other (income) |  | (2.7) | (3.3) | (7.2) | (8.8)
Income before income taxes |  | 29.4 | 31.7 | 59.1 | 67.8
Eliminations [Member] |  |  |  |  |
Financial Services [Abstract] |  |  |  |  |
Income before income taxes |  | (306.0) | (277.1) | (751.1) | (673.4)
Income tax expense |  | (105.0) | (93.3) | (259.7) | (234.5)
Net income |  | (201.0) | (183.8) | (491.4) | (438.9)
Comprehensive income |  | (201.0) | (183.8) | (491.4) | (438.9)
Eliminations [Member] | Homebuilding [Member] |  |  |  |  |
Homebuilding: |  |  |  |  |
Revenues |  | (10.6) | 0.0 | (16.0) | 0.0
Cost of sales |  | (7.9) | 0.0 | (10.8) | 0.0
Total gross profit |  | (2.7) | 0.0 | (5.2) | 0.0
Selling, general and administrative expense |  | 0.0 | 0.0 | 0.0 | 0.0
Equity in (income) of subsidiaries |  | 303.3 | 277.1 | 745.9 | 673.4
Other (income) |  | 0.0 | 0.0 | 0.0 | 0.0
Financial Services [Abstract] |  |  |  |  |
Income before income taxes |  | (306.0) | (277.1) | (751.1) | (673.4)
Eliminations [Member] | Financial Services [Member] |  |  |  |  |
Financial Services [Abstract] |  |  |  |  |
Revenues |  | 0.0 | 0.0 | 0.0 | 0.0
General and administrative expense |  | 0.0 | 0.0 | 0.0 | 0.0
Interest and other (income) |  | 0.0 | 0.0 | 0.0 | 0.0
Income before income taxes |  | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.0
[1] | Expenses maintained at the corporate level consist primarily of interest and property taxes, which are capitalized and amortized to cost of sales or expensed directly, and the expenses related to operating the Company’s corporate office. The amortization of capitalized interest and property taxes is allocated to each segment based on the segment’s cost of sales, while those expenses associated with the corporate office are allocated to each segment based on the segment’s inventory balances.

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591552-111686 + Details
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