Segment Information - Depreciation and Amortization and Capital Expenditures by Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Total segment depreciation and amortization	$ 164,483	$ 163,502	$ 494,968	$ 425,532
Total equity in net income of unconsolidated investments (net of tax)	60,640	229,058	203,184	696,436
Total capital expenditures	132,164	303,126	434,416	1,337,719
Reportable Segments
Segment Reporting Information [Line Items]
Total segment depreciation and amortization	162,399	161,808	488,081	420,416
Total equity in net income of unconsolidated investments (net of tax)	55,556	214,471	176,048	677,746
Total capital expenditures	127,858	292,830	425,078	1,305,043
Reportable Segments | Energy Storage
Segment Reporting Information [Line Items]
Total segment depreciation and amortization	122,100	124,346	369,623	312,053
Total equity in net income of unconsolidated investments (net of tax)	47,498	212,679	152,194	660,250
Total capital expenditures	57,685	223,407	210,641	998,841
Reportable Segments | Specialties
Segment Reporting Information [Line Items]
Total segment depreciation and amortization	27,007	24,474	78,408	70,081
Total capital expenditures	34,034	47,513	119,993	214,827
Reportable Segments | Ketjen
Segment Reporting Information [Line Items]
Total segment depreciation and amortization	13,292	12,988	40,050	38,282
Total equity in net income of unconsolidated investments (net of tax)	8,058	1,792	23,854	17,496
Total capital expenditures	36,139	21,910	94,444	91,375
Corporate
Segment Reporting Information [Line Items]
Total segment depreciation and amortization	2,084	1,694	6,887	5,116
Total equity in net income of unconsolidated investments (net of tax)	5,084	14,587	27,136	18,690
Total capital expenditures	$ 4,306	$ 10,296	$ 9,338	$ 32,676