Homebuilding Senior Notes and Other Debts Payable (Narrative) (Details) - Homebuilding - USD ($)	3 Months Ended
Feb. 28, 2021	Nov. 30, 2020
Unsecured revolving credit facility \| Credit Agreement
Debt Instrument [Line Items]
Maximum borrowings	$ 2,500,000,000	$ 2,400,000,000
Increase in maximum borrowings	100,000,000
Accordion feature	300,000,000
Maximum borrowing capacity after accordion feature	2,800,000,000
Letter of Credit \| Credit Agreement
Debt Instrument [Line Items]
Maximum borrowings	500,000,000
Senior Notes
Debt Instrument [Line Items]
Debt issuance cost	$ 14,800,000	$ 15,900,000

Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option

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- Definition

Line of Credit Facility, Maximum Borrowing Capacity, Increase (Decrease)

+ References

No definition available.

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- Definition

Line of Credit Facility, Accordion Feature, Increase Limit

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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