Financial Services Segment (Schedule of Credit Facilities) (Details)	9 Months Ended
	Aug. 31, 2019 USD ($) extension	Nov. 30, 2018 USD ($)
Financial Services | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	$ 1,600,000,000
Financial Services | Warehouse Repurchase Facility | 364-day warehouse repurchase facility that matures October 2019
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	$ 500,000,000
Facility, term	364 days
Uncommitted amount	$ 400,000,000
Financial Services | Warehouse Repurchase Facility | 364-day warehouse repurchase facility that matures November 2019
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	$ 300,000,000
Facility, term	364 days
Uncommitted amount	$ 300,000,000
Financial Services | Warehouse Repurchase Facility | 364-day warehouse repurchase facility that matures March 2020
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	$ 300,000,000
Facility, term	364 days
Uncommitted amount	$ 300,000,000
Financial Services | Warehouse Repurchase Facility | 364-day warehouse repurchase facility that matures June 2020
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	$ 500,000,000
Facility, term	364 days
Lennar Other | 364-day warehouse repurchase facility that matures November 2019
Line of Credit Facility [Line Items]
Facility, term	364 days
Lennar Other | 364-day warehouse repurchase facility that matures December 2019
Line of Credit Facility [Line Items]
Facility, term	364 days
Lennar Other | 364-day warehouse repurchase facility that matures December 2019
Line of Credit Facility [Line Items]
Facility, term	364 days
Lennar Other | 364-day warehouse repurchase facility that matures December 2019
Line of Credit Facility [Line Items]
Facility, term	364 days
Lennar Other | Warehouse Repurchase Facility | 364-day warehouse repurchase facility that matures December 2019
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	$ 200,000,000
Lennar Other | Warehouse Repurchase Facility | 364-day warehouse repurchase facility that matures December 2019
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	200,000,000
Warehouse Repurchase Facility | Lennar Other
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	900,000,000
Warehouse Repurchase Facility | Lennar Other | 364-day warehouse repurchase facility that matures November 2019
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	200,000,000
Warehouse Repurchase Facility | Lennar Other | Warehouse repurchase facility that matures December 2019 (two - one year extensions)
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	$ 50,000,000
Debt Instrument, Extension Term	1 year
Debt Instrument, Number of Extensions | extension	2
Long-term Line of Credit	$ 0	$ 0
Rialto Mortgage Finance | Warehouse Repurchase Facility | Lennar Other
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	850,000,000
Rialto Mortgage Finance | Warehouse Repurchase Facility | Lennar Other | 364-day warehouse repurchase facility that matures December 2019
Line of Credit Facility [Line Items]
Maximum Aggregate Commitment	$ 250,000,000