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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Date the credit facility terminates, in CCYY-MM-DD format.

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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.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Notes Payable (Narratives) (Details) - USD ($)	3 Months Ended
Notes Payable (Narratives) (Details) - USD ($)	Feb. 29, 2020	Feb. 28, 2019	Nov. 30, 2019	Feb. 01, 2019
Debt Instrument [Line Items]
Unamortized debt issuance costs, premiums and discounts	$ 8,700,000		$ 9,100,000
Letters of credit outstanding	45,800,000		34,700,000
Inventories pledged to collateralize mortgages and land contracts, carrying value	30,800,000
Repayment of senior notes	0	$ 230,000,000
Proceeds from issuance of debt	0	$ 405,250,000
Repayments of principal, 2019	7,900,000
Repayments of principal, 2020	0
Repayments of principal, 2021	800,000,000.0
Repayments of principal, 2022	350,000,000.0
Repayments of principal, 2023	0
Repayments of principal, thereafter	$ 600,000,000.0
1.375% Convertible senior notes due February 1, 2019 [Member] \| Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Senior notes, rate				1.375%
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%
4.75% Senior notes due May 15, 2019 [Member] \| 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	$ 800,000,000.0
Unsecured revolving credit facility, expiration date	Oct. 07, 2023
Unsecured revolving credit facility, maximum borrowing capacity	$ 1,000,000,000.00
Credit facility, letters of credit outstanding	0
Unsecured revolving credit facility, remaining borrowing capacity	$ 787,600,000
Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.20%
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	$ 250,000,000.0
Credit facility, letters of credit outstanding	12,400,000
Unsecured revolving credit facility, remaining borrowing capacity	237,600,000
LOC Facilities [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility, borrowing capacity	50,000,000.0
Letters of credit outstanding	$ 33,400,000		$ 15,800,000