Basis of Presentation (Policy)	6 Months Ended
May 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Consolidation	Basis of Consolidation The accompanying condensed consolidated financial statements include the accounts of Lennar Corporation and all subsidiaries, partnerships and other entities in which Lennar Corporation has a controlling interest and variable interest entities ("VIEs") (see Note 16 of the Notes to the Condensed Consolidated Financial Statements) in which Lennar Corporation is deemed to be the primary beneficiary (the "Company"). The Company’s investments in both unconsolidated entities in which a significant, but less than controlling, interest is held and in VIEs in which the Company is not deemed to be the primary beneficiary, are accounted for by the equity method. All intercompany transactions and balances have been eliminated in consolidation.
Basis of Accounting	The condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended November 30, 2018. In the opinion of management, all adjustments (consisting of normal recurring adjustments) necessary for the fair presentation of the accompanying condensed consolidated financial statements have been made. The Company has historically experienced, and expects to continue to experience, variability in quarterly results. The condensed consolidated statements of operations for the three and six months ended May 31, 2019 are not necessarily indicative of the results to be expected for the full year.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Revenue from Contract with Customer [Policy Text Block]	Revenue Recognition Homebuilding revenues and related profits from sales of homes are recognized at the time of the closing of a sale, when title to and possession of the property are transferred to the homebuyer. The Company’s performance obligation, to deliver the agreed-upon home, is generally satisfied in less than one year from the original contract date. Cash proceeds from home closings held in escrow for the Company’s benefit, typically for approximately three days, are included in Homebuilding cash and cash equivalents in the Condensed Consolidated Balance Sheets and disclosed in Note 11 of the Notes to the Condensed Consolidated Financial Statements. Contract liabilities include customer deposits liabilities related to sold but undelivered homes that are included in other liabilities in the Condensed Consolidated Balance Sheets. The Company periodically elects to sell parcels of land to third parties. Cash consideration from land sales is typically due on the closing date, which is generally when performance obligations are satisfied and revenue is recognized as title to and possession of the property are transferred to the buyer. The Company’s financial services’ operations recognize revenues as follows: Title premiums on policies issued directly by the Company are recognized as revenue on the effective date of the title policies. Escrow fees and loan origination revenues are recognized at the time the related real estate transactions are completed, usually upon the close of escrow. Revenues from title policies issued by independent agents are recognized as revenue when notice of issuance is received from the agent, which is generally when cash payment is received by the Company. The Company’s Multifamily segment provides management services with respect to the development, construction and property management of rental projects in joint ventures in which the Company has investments. As a result, the Multifamily segment earns and receives fees, which are generally based upon a stated percentage of development and construction costs and a percentage of gross rental collections. These fees are recorded over the period in which the services are performed using an input method, which properly depicts the level of effort required to complete the management services. In addition, the Multifamily segment provides general contractor services for the construction of some of its rental projects and recognizes the revenue over the period in which the services are performed using an input method, which properly depicts the level of effort required to complete the construction services. These customer contracts require the Company to provide management and general contractor services which represents a performance obligation that the Company satisfies over time. Management fees and general contractor services in the Multifamily segment are included in Multifamily revenue.
Reclassifications	Reclassifications Certain prior year amounts in the condensed consolidated financial statements have been reclassified to conform with the 2019 presentation. The Company's segments were adjusted to reflect Rialto Mortgage Finance ("RMF") and certain other Rialto assets within the Financial Services segment effective December 1, 2018. The remaining assets retained related to the Company's former Rialto segment were included in the Lennar Other segment. In addition, the Company's strategic technology investments, which were part of Homebuilding, were reclassified to be included in the Lennar Other segment. These reclassifications were between segments and had no impact on the Company's total assets, total equity, revenue or net income in the condensed consolidated financial statements.
New Accounting Pronouncements	New Accounting Pronouncements In March 2016, the FASB issued ASU 2016-02, Leases ("ASU 2016-02"), which provides guidance for accounting for leases. ASU 2016-02 requires lessees to classify leases as either finance or operating leases and to record a right-of-use asset and a lease liability for all leases with a term greater than 12 months regardless of the lease classification. The lease classification will determine whether the lease expense is recognized based on an effective interest rate method or on a straight line basis over the term of the lease. Accounting for lessors remains largely unchanged from current GAAP. ASU 2016-02 will be effective for the Company’s fiscal year beginning December 1, 2019 and subsequent interim periods. The Company is currently evaluating the impact the adoption of ASU 2016-02 will have on the Company's condensed consolidated financial statements. Subsequent to the issuance of ASU 2016-02, the FASB issued ASUs 2018-01, Land Easement Practical Expedient for Transition to Topic 842, 2018-10, Codification Improvements to Topic 842, Leases, 2018-11, Leases (Topic 842): Targeted Improvements, 2018-20, Narrow-Scope Improvements for Lessors, and 2019-01, Leases (Topic 842) Codification Improvements. These ASUs do not change the core principle of the guidance in ASU 2016-02. Instead these amendments are intended to clarify and improve operability of certain topics included within the credit losses standard. These ASUs will have the same effective date and transition requirements as ASU 2016-02. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASU 2016-13"). ASU 2016-13 significantly changes the impairment model for most financial assets and certain other instruments. ASU 2016-13 will require immediate recognition of estimated credit losses expected to occur over the remaining life of many financial assets, which will generally result in earlier recognition of allowances for credit losses on loans and other financial instruments. ASU 2016-13 is effective for the Company's fiscal year beginning December 1, 2020 and subsequent interim periods. The Company is currently evaluating the impact the adoption of ASU 2016-13 will have on its condensed consolidated financial statements. Subsequent to the issuance of ASU 2016-13, the FASB issued ASU 2018-19, Codification Improvements to Topic 326, Financial Instruments —Credit Losses and ASU 2019-05, Financial Instruments —Credit Losses (Topic 326) Targeted Transition Relief. These ASUs do not change the core principle of the guidance in ASU 2016-13. Instead these amendments are intended to clarify and improve operability of certain topics included within the credit losses standard. These ASUs will have the same effective date and transition requirements as ASU 2016-13. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350), Simplifying the Accounting for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 removes the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. A goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 will be effective for the Company’s fiscal year beginning December 1, 2020. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is currently evaluating the impact the adoption of ASU 2017-04 will have on the Company's condensed consolidated financial statements.

Basis of Presentation (Policy)

6 Months Ended

May 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The accompanying condensed consolidated financial statements include the accounts of Lennar Corporation and all subsidiaries, partnerships and other entities in which Lennar Corporation has a controlling interest and variable interest entities ("VIEs") (see Note 16 of the Notes to the Condensed Consolidated Financial Statements) in which Lennar Corporation is deemed to be the primary beneficiary (the "Company"). The Company’s investments in both unconsolidated entities in which a significant, but less than controlling, interest is held and in VIEs in which the Company is not deemed to be the primary beneficiary, are accounted for by the equity method. All intercompany transactions and balances have been eliminated in consolidation.

Basis of Accounting

The condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended November 30, 2018. In the opinion of management, all adjustments (consisting of normal recurring adjustments) necessary for the fair presentation of the accompanying condensed consolidated financial statements have been made.

The Company has historically experienced, and expects to continue to experience, variability in quarterly results. The condensed consolidated statements of operations for the three and six months ended May 31, 2019 are not necessarily indicative of the results to be expected for the full year.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

Revenue from Contract with Customer [Policy Text Block]

Revenue Recognition

Homebuilding revenues and related profits from sales of homes are recognized at the time of the closing of a sale, when title to and possession of the property are transferred to the homebuyer. The Company’s performance obligation, to deliver the agreed-upon home, is generally satisfied in less than one year from the original contract date. Cash proceeds from home closings held in escrow for the Company’s benefit, typically for approximately three days, are included in Homebuilding cash and cash equivalents in the Condensed Consolidated Balance Sheets and disclosed in Note 11 of the Notes to the Condensed Consolidated Financial Statements. Contract liabilities include customer deposits liabilities related to sold but undelivered homes that are included in other liabilities in the Condensed Consolidated Balance Sheets. The Company periodically elects to sell parcels of land to third parties. Cash consideration from land sales is typically due on the closing date, which is generally when performance obligations are satisfied and revenue is recognized as title to and possession of the property are transferred to the buyer.

The Company’s financial services’ operations recognize revenues as follows: Title premiums on policies issued directly by the Company are recognized as revenue on the effective date of the title policies. Escrow fees and loan origination revenues are recognized at the time the related real estate transactions are completed, usually upon the close of escrow. Revenues from title policies issued by independent agents are recognized as revenue when notice of issuance is received from the agent, which is generally when cash payment is received by the Company.

The Company’s Multifamily segment provides management services with respect to the development, construction and property management of rental projects in joint ventures in which the Company has investments. As a result, the Multifamily segment earns and receives fees, which are generally based upon a stated percentage of development and construction costs and a percentage of gross rental collections. These fees are recorded over the period in which the services are performed using an input method, which properly depicts the level of effort required to complete the management services. In addition, the Multifamily segment provides general contractor services for the construction of some of its rental projects and recognizes the revenue over the period in which the services are performed using an input method, which properly depicts the level of effort required to complete the construction services. These customer contracts require the Company to provide management and general contractor services which represents a performance obligation that the Company satisfies over time. Management fees and general contractor services in the Multifamily segment are included in Multifamily revenue.

Reclassifications

Certain prior year amounts in the condensed consolidated financial statements have been reclassified to conform with the 2019 presentation. The Company's segments were adjusted to reflect Rialto Mortgage Finance ("RMF") and certain other Rialto assets within the Financial Services segment effective December 1, 2018. The remaining assets retained related to the Company's former Rialto segment were included in the Lennar Other segment. In addition, the Company's strategic technology investments, which were part of Homebuilding, were reclassified to be included in the Lennar Other segment. These reclassifications were between segments and had no impact on the Company's total assets, total equity, revenue or net income in the condensed consolidated financial statements.

New Accounting Pronouncements

In March 2016, the FASB issued ASU 2016-02, Leases ("ASU 2016-02"), which provides guidance for accounting for leases. ASU 2016-02 requires lessees to classify leases as either finance or operating leases and to record a right-of-use asset and a lease liability for all leases with a term greater than 12 months regardless of the lease classification. The lease classification will determine whether the lease expense is recognized based on an effective interest rate method or on a straight line basis over the term of the lease. Accounting for lessors remains largely unchanged from current GAAP. ASU 2016-02 will be effective for the Company’s fiscal year beginning December 1, 2019 and subsequent interim periods. The Company is currently evaluating the impact the adoption of ASU 2016-02 will have on the Company's condensed consolidated financial statements. Subsequent to the issuance of ASU 2016-02, the FASB issued ASUs 2018-01, Land Easement Practical Expedient for Transition to Topic 842, 2018-10, Codification Improvements to Topic 842, Leases, 2018-11, Leases (Topic 842): Targeted Improvements, 2018-20, Narrow-Scope Improvements for Lessors, and 2019-01, Leases (Topic 842) Codification Improvements. These ASUs do not change the core principle of the guidance in ASU 2016-02. Instead these amendments are intended to clarify and improve operability of certain topics included within the credit losses standard. These ASUs will have the same effective date and transition requirements as ASU 2016-02.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASU 2016-13"). ASU 2016-13 significantly changes the impairment model for most financial assets and certain other instruments. ASU 2016-13 will require immediate recognition of estimated credit losses expected to occur over the remaining life of many financial assets, which will generally result in earlier recognition of allowances for credit losses on loans and other financial instruments. ASU 2016-13 is effective for the Company's fiscal year beginning December 1, 2020 and subsequent interim periods. The Company is currently evaluating the impact the adoption of ASU 2016-13 will have on its condensed consolidated financial statements. Subsequent to the issuance of ASU 2016-13, the FASB issued ASU 2018-19, Codification Improvements to Topic 326, Financial Instruments —Credit Losses and ASU 2019-05, Financial Instruments —Credit Losses (Topic 326) Targeted Transition Relief. These ASUs do not change the core principle of the guidance in ASU 2016-13. Instead these amendments are intended to clarify and improve operability of certain topics

included within the credit losses standard. These ASUs will have the same effective date and transition requirements as ASU 2016-13.

In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350), Simplifying the Accounting for Goodwill Impairment ("ASU 2017-04"). ASU 2017-04 removes the requirement to perform a hypothetical purchase price allocation to measure goodwill impairment. A goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 will be effective for the Company’s fiscal year beginning December 1, 2020. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is currently evaluating the impact the adoption of ASU 2017-04 will have on the Company's condensed consolidated financial statements.