Segment Information and Revenue - Depreciation and Amortization Expense and Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Depreciation and amortization	$ 129,780	$ 110,031	$ 87,467
Share-based compensation	311,686	197,550	198,902
Homes
Segment Reporting, Revenue Reconciling Item [Line Items]
Depreciation and amortization	22,393	13,315	8,414
Share-based compensation	76,879	48,166	32,390
IMT
Segment Reporting, Revenue Reconciling Item [Line Items]
Depreciation and amortization	99,026	89,862	73,369
Share-based compensation	200,963	134,691	150,434
Mortgages
Segment Reporting, Revenue Reconciling Item [Line Items]
Depreciation and amortization	8,361	6,854	5,684
Share-based compensation	$ 33,844	$ 14,693	$ 16,078

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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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 of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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