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Segment Information (Tables) | 12 Months Ended
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Sep. 30, 2017
Segment Reporting [Abstract] |
Reporting segment results | Financial information relating to the Company’s reporting segments is as follows:
| Year Ended September 30,
| 2017 |  | 2016 |  | 2015
|  |  | (In millions) |  |
Revenues |  |  |  |  |  |  |  |
Homebuilding revenues: |  |  |  |  |  |  |  |
East | $ | 1,640.1 |  |  | $ | 1,446.5 |  |  | $ | 1,333.6 |
Midwest | 736.5 |  |  | 651.7 |  |  | 666.1 |
Southeast | 4,087.6 |  |  | 3,463.5 |  |  | 2,890.6 |
South Central | 3,383.1 |  |  | 2,995.1 |  |  | 2,725.2 |
Southwest | 597.5 |  |  | 388.1 |  |  | 336.1 |
West | 3,296.7 |  |  | 2,916.9 |  |  | 2,607.4 |
Homebuilding revenues | 13,741.5 |  |  | 11,861.8 |  |  | 10,559.0 |
Financial services revenues | 349.5 |  |  | 295.6 |  |  | 265.0 |
Total revenues | $ | 14,091.0 |  |  | $ | 12,157.4 |  |  | $ | 10,824.0 |
Inventory Impairments |  |  |  |  |  |  |  |
East | $ | 10.5 |  |  | $ | 12.3 |  |  | $ | 14.3 |
Midwest | 1.0 |  |  | — |  |  | — |
Southeast | 2.4 |  |  | 0.7 |  |  | 8.8 |
South Central | 1.6 |  |  | 1.0 |  |  | 1.4 |
Southwest | 1.4 |  |  | 6.0 |  |  | — |
West | 6.3 |  |  | 0.3 |  |  | 20.4 |
Total inventory impairments | $ | 23.2 |  |  | $ | 20.3 |  |  | $ | 44.9 |
Income Before Income Taxes (1) (2) |  |  |  |  |  |  |  |
Homebuilding pre-tax income: |  |  |  |  |  |  |  |
East | $ | 153.9 |  |  | $ | 138.7 |  |  | $ | 94.2 |
Midwest | 49.1 |  |  | 44.3 |  |  | 49.8 |
Southeast | 450.3 |  |  | 388.4 |  |  | 278.7 |
South Central | 439.1 |  |  | 374.8 |  |  | 296.6 |
Southwest | 39.6 |  |  | 7.3 |  |  | 13.1 |
West | 357.3 |  |  | 310.9 |  |  | 285.9 |
Homebuilding pre-tax income | 1,489.3 |  |  | 1,264.4 |  |  | 1,018.3 |
Financial services pre-tax income | 124.5 |  |  | 98.1 |  |  | 105.1 |
Homebuilding and financial services pre-tax income | 1,613.8 |  |  | 1,362.5 |  |  | 1,123.4 |
Other pre-tax loss | (11.7 | ) |  | (9.0 | ) |  | — |
Income before income taxes | $ | 1,602.1 |  |  | $ | 1,353.5 |  |  | $ | 1,123.4 |
_____________
(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 expenses associated with the corporate office are allocated to each segment based on the segment’s inventory balances.
(2) | The operating results of certain subsidiaries that are immaterial for separate reporting are grouped together and presented as other.
| September 30,
| 2017 |  | 2016
| (In millions)
Homebuilding Inventories (1): |  |  |  |  |
East | $ | 1,068.9 |  |  | $ | 891.1 |
Midwest | 492.6 |  |  | 441.2 |
Southeast | 2,392.3 |  |  | 2,070.3 |
South Central | 2,199.4 |  |  | 2,075.6 |
Southwest | 506.1 |  |  | 371.1 |
West | 2,352.5 |  |  | 2,247.6 |
Corporate and unallocated (2) | 225.3 |  |  | 244.0 |
Total homebuilding inventories | $ | 9,237.1 |  |  | $ | 8,340.9 |
___________
(1) | Homebuilding inventories are the only assets included in the measure of homebuilding segment assets used by the Company’s chief operating decision makers.
(2) | Corporate and unallocated consists primarily of capitalized interest and property taxes.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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