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Commitments And Contingencies (Narrative) (Details) (USD $)	3 Months Ended		24 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2007	Dec. 31, 2011	Dec. 31, 2010
Commitments and Contingencies Disclosure [Abstract]
Total Mortgage Loans Originated			$ 39,500,000,000
Percentage of loan origination repurchase requests in which Company is able to cure or refute the claim	60.00%
Actual Loss Severities Percentage on Mortgage Repurchase Requests	50.00%
Loss Contingencies [Line Items]
Accrued liabilities for outstanding community development district obligations	37,400,000			38,400,000
Aggregate Principal Balance of Community Development District Obligations Repurchased	0	27,500,000
Discount on repurchases of community development district obligations		5,300,000
Letters of Credit Outstanding, Amount	219,300,000			235,900,000
Surety Bonds Outstanding	1,200,000,000			1,200,000,000
Maximum product warranty in years	10
Self-insurance liabilities	740,024,000	774,752,000		741,383,000	785,562,000
Incurred but not reported percentage of liability reserves	78.00%	78.00%
Residential mortgage backed securities known [Member]
Loss Contingencies [Line Items]
Residential mortgage-backed securities principal sold in previous period	162,000,000
Residential mortgage backed securities other [Member]
Loss Contingencies [Line Items]
Residential mortgage-backed securities principal sold in previous period	$ 116,000,000

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Actual Loss Severities Percentage on Mortgage Repurchase Requests

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Discount On Repurchase Of Special Assessment Bond

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Incurred but not reported percentage of liability reserves

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Maximum product warranty in years

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Percentage of loan origination repurchase requests in which Company is able to cure or refute the claim

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Principal amount of special assessment bonds repurchased prior to maturity.

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Principal amount of mortgage loans Company sold in a residential mortgage backed securities transaction that is currently associated with a lawsuit in which the bank the Company sold the loans to has been named a defendant.

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Surety Bonds Outstanding

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Total amount of new mortgage loans on real estate during the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 310

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-29.6)

-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule IV

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 29

-Article 12



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule IV)

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Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Including the current and noncurrent portions, carrying value as of the balance sheet date of a type of municipal bond typically used to fund a development project. Also called special assessment limited liability bond, special district bond, special purpose bond, special tax bond and community development obligation. Interest owed to lenders is paid by taxes levied on the community benefiting from the particular bond-funded project. For example, if a bond of this sort was issued to pay for sidewalks to be repaved in a certain community, an additional tax would be levied on homeowners in the area benefiting from this project.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13, 16

-Article 9



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section S99

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-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

-Number 210

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