Notes Payable (Narratives) (Details) - USD ($)	3 Months Ended
	May 31, 2022	Feb. 17, 2022	Nov. 30, 2021
Debt Instrument [Line Items]
Unamortized debt issuance costs, premiums and discounts	$ 9,700,000		$ 10,300,000
Letters of credit outstanding	45,000,000		43,200,000
Inventories pledged to collateralize mortgages and land contracts, carrying value	22,200,000
Repayments of principal, 2019	353,200,000
Repayments of principal, 2020	351,700,000
Repayments of principal, 2021	0
Repayments of principal, 2022	0
Repayments of principal, thereafter	990,000,000
Repayments of principal, 2023	$ 0
6.875% Senior notes due June 15, 2027 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, rate	6.875%
7.625% Senior notes due May 15, 2023 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, rate	7.625%
4.00% Senior notes due June 15, 2031 | Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, rate	4.00%
4.80% Senior notes due November 15, 2029 | Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, rate	4.80%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility, borrowing capacity	$ 1,090,000,000.00		800,000,000
Unsecured revolving credit facility, expiration date	Feb. 18, 2027	Oct. 07, 2023
Unsecured revolving credit facility, maximum borrowing capacity	$ 1,290,000,000
Credit facility, letters of credit outstanding	400,000,000
Unsecured revolving credit facility, remaining borrowing capacity	$ 681,400,000
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.15%
Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.35%
Letter of Credit [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility, maximum borrowing capacity	$ 250,000,000
Credit facility, letters of credit outstanding	8,600,000
Unsecured revolving credit facility, remaining borrowing capacity	241,400,000
LOC Facilities [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility, borrowing capacity	$ 75,000,000
Unsecured revolving credit facility, expiration date	Feb. 13, 2025
Letters of credit outstanding	$ 36,400,000		$ 34,600,000