Investments in Affiliates and Other Entities - Equity Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Non-marketable equity securities	$ 78,107	$ 62,539
Total equity investments	434,771	241,616
Integral Unconsolidated Affiliates
Schedule of Equity Method Investments [Line Items]
Equity method investments	270,501	101,460
Non-Integral Unconsolidated Affiliates
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 86,163	$ 77,617

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

- Definition

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 + Details

QUANTA SERVICES, INC. 10-Q