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Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Mar. 18, 2021	Aug. 13, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in VTS	$ (100,700)
Investments in unconsolidated subsidiaries at fair value using NAV	359,900		$ 353,000
Asset impairments	0	$ 10,351
Non-public entity designated as trading debt security			10,000
Notes payable on real estate	$ 55,900		52,700
4.875% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	4.875%				4.875%
2.500% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	2.50%			2.50%
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior term loans	$ 432,300		424,600
Estimated Fair Value | 4.875% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	591,800		595,200
Estimated Fair Value | 2.500% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	395,300		396,800
Actual Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior term loans	433,400		427,800
Actual Carrying Value | 4.875% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	596,700		596,400
Actual Carrying Value | 2.500% Senior Notes | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	$ 489,600		$ 489,300

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Contractual interest rate for funds borrowed, under the debt agreement.

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The total fair value for all investments, comprising or included in the major category, of those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments) for which the entity has intentions to sell or liquidate, but the specific assets for sale or liquidation have not been identified (for example, the entity intends to sell $10,000,000 of its investments in private equity funds, but the individual investments to be sold have not been identified).

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