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Quarterly results (unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Homebuilding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 1,230,971 |  | $ 1,114,027 |  | $ 904,831 |  | $ 783,767 |  | $ 1,157,345 |  | $ 1,030,755 |  | $ 1,269,735 |  | $ 989,792 |  | $ 4,033,596 |  | $ 4,447,627 |  | $ 3,966,589 |
Cost of revenues | 1,079,370 | [1] | 944,882 | [1] | 793,465 | [1] | 685,960 | [1] | 1,136,191 | [2] | 957,637 | [2] | 1,107,019 | [2] | 859,093 | [2] | 3,503,677 |  | 4,059,940 |  | 4,485,644 |
Income (loss) before income taxes | 18,351 | [3] | (211,126) | [3] | (36,690) | [3] | (46,365) | [3] | (195,734) | [4] | (1,027,300) | [4] | 2,859 | [4] | (19,980) | [4] | (275,830) |  | (1,240,155) |  | (1,920,081) |
Financial Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | 31,374 |  | 27,904 |  | 22,381 |  | 21,435 |  | 27,925 |  | 27,009 |  | 36,163 |  | 30,566 |  | 103,094 |  | 121,663 |  | 117,800 |
Income (loss) before income taxes | (27,426) |  | 8,626 |  | (16,643) |  | 973 |  | 5,259 |  | 3,463 |  | (8,585) |  | 5,472 |  | (34,470) | [5] | 5,609 | [5] | (55,038) | [5]
Consolidated results: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | 1,262,345 |  | 1,141,931 |  | 927,212 |  | 805,202 |  | 1,185,270 |  | 1,057,764 |  | 1,305,898 |  | 1,020,358 |  | 4,136,690 |  | 4,569,290 |  | 4,084,389 |
Income (loss) before income taxes | (9,075) |  | (202,500) |  | (53,333) |  | (45,392) |  | (190,475) |  | (1,023,837) |  | (5,726) |  | (14,508) |  | (310,300) |  | (1,234,546) |  | (1,975,119) |
Income taxes (benefit) | (22,896) |  | (73,202) |  | 2,052 |  | (5,866) |  | (25,047) |  | (28,721) |  | (82,029) |  | (2,020) |  | (99,912) |  | (137,817) |  | (792,552) |
Net income (loss) | $ 13,821 |  | $ (129,298) |  | $ (55,385) |  | $ (39,526) |  | $ (165,428) |  | $ (995,116) |  | $ 76,303 |  | $ (12,488) |  | $ (210,388) |  | $ (1,096,729) |  | $ (1,182,567) |
Basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ 0.04 |  | $ (0.34) |  | $ (0.15) |  | $ (0.10) |  | $ (0.44) |  | $ (2.63) |  | $ 0.20 |  | $ (0.03) |  | $ (0.55) |  | $ (2.90) |  | $ (3.94) |
Weighted-average common shares outstanding | 380,149 |  | 380,025 |  | 379,781 |  | 379,544 |  | 379,115 |  | 378,842 |  | 378,618 |  | 377,747 |  | 379,877 |  | 378,585 |  | 300,179 |
Assuming dilution: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ 0.04 |  | $ (0.34) |  | $ (0.15) |  | $ (0.10) |  | $ (0.44) |  | $ (2.63) |  | $ 0.20 |  | $ (0.03) |  | $ (0.55) |  | $ (2.90) |  | $ (3.94) |
Adjusted weighted-average common shares and effect of dilutive securities | 381,261 |  | 380,025 |  | 379,781 |  | 379,544 |  | 379,115 |  | 378,842 |  | 380,412 |  | 377,747 |  | 379,877 |  | 378,585 |  | 300,179 |
[1] | Cost of revenues includes land and community valuation adjustments of $0.1 million, $3.3 million, $1.5 million, and $11.0 million and net realizable value adjustments of $0.0 million, $(0.2) million, $0.1 million, and $9.9 million for the 1st Quarter, 2nd Quarter, 3rd Quarter, and 4th Quarter, respectively.
[2] | Cost of revenues includes land and community valuation adjustments of $4.5 million, $25.5 million, $57.5 million, and $82.2 million and net realizable value adjustments of $0.6 million, $(0.2) million, $0.6 million, and $38.1 million for the 1st Quarter, 2nd Quarter, 3rd Quarter, and 4th Quarter, respectively.
[3] | Income (loss) before income taxes includes the write-off (recovery) of deposits and pre-acquisition costs of $0.6 million, $3.7 million, $2.3 million, and $3.4 million for the 1st Quarter, 2nd Quarter, 3rd Quarter, and 4th Quarter, respectively. Income (loss) before income taxes also includes goodwill impairments of $240.5 million for the 3rd Quarter. Homebuilding income (loss) before income taxes includes amounts previously classified within Other Non-Operating
[4] | Income (loss) before income taxes includes the write-off (recovery) of deposits and pre-acquisition costs of $0.5 million, $2.3 million, $1.1 million, and $1.6 million for the 1st Quarter, 2nd Quarter, 3rd Quarter, and 4th Quarter, respectively. Income (loss) before income taxes also includes impairments of investments of unconsolidated joint ventures of $1.9 million for the 1st Quarter and goodwill impairments of $1.4 million and $654.9 million for the 2nd Quarter and 3rd Quarter, respectively. Income (loss) before income taxes also includes insurance-related charges of $10.0 million, $9.6 million, $272.2 million, and $(11.4) million for the 1st Quarter, 2nd Quarter, 3rd Quarter, and 4th Quarter, respectively. Homebuilding income (loss) before income taxes includes amounts previously classified within Other Non-Operating.
[5] | Financial Services income (loss) before income taxes includes interest expense of $1.6 million and $2.3 million for 2010 and 2009, respectively, and interest income of $5.0 million, $5.8 million, and $7.7 million for 2011, 2010, and 2009, respectively.

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration