v3.26.1
Segment reporting - Summary of Selected financial information for each segment (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Revenue From Segments To Consolidated [Line Items]        
Total revenue $ 937.7 $ 659.5 $ 1,606.5 $ 1,153.5
Other non-cash items     (32.0) (11.8)
Operating Segments [Member]        
Revenue From Segments To Consolidated [Line Items]        
Total revenue 937.7 659.5 1,606.5 1,153.5
Cost of goods and services sold (629.8) (431.1) (1,064.8) (735.7)
Research and development (31.9) (27.2) (60.8) (46.4)
Selling, general and administrative expenses (118.6) (76.5) (220.8) (154.2)
Depreciation and amortization 27.1 24.6 52.3 48.0
Other non-cash items 2.0 2.1 5.5 3.7
Management adjustments 1.3 0.6 2.1 1.0
Other segment items 0.6 0.0 1.3 0.6
Adjusted Segment EBITDA 188.4 152.0 321.3 270.5
Equipment [Member]        
Revenue From Segments To Consolidated [Line Items]        
Total revenue 569.3 354.1 891.8 564.3
Equipment [Member] | Operating Segments [Member]        
Revenue From Segments To Consolidated [Line Items]        
Total revenue 569.3 354.1 891.8 564.3
Cost of goods and services sold (421.6) (251.0) (662.5) (397.5)
Research and development (20.6) (13.9) (39.3) (23.8)
Selling, general and administrative expenses (65.0) (35.9) (120.5) (73.3)
Depreciation and amortization 14.4 11.3 27.1 21.9
Other non-cash items 1.2 1.2 3.3 2.1
Management adjustments 0.4 0.1 0.6 0.0
Other segment items 0.5 0.2 1.0 0.5
Adjusted Segment EBITDA 78.6 66.1 101.5 94.3
Service [Member]        
Revenue From Segments To Consolidated [Line Items]        
Total revenue 368.4 305.4 714.7 589.2
Service [Member] | Operating Segments [Member]        
Revenue From Segments To Consolidated [Line Items]        
Total revenue 368.4 305.4 714.7 589.2
Cost of goods and services sold (208.2) (180.1) (402.3) (338.2)
Research and development (11.3) (13.3) (21.5) (22.6)
Selling, general and administrative expenses (53.6) (40.6) (100.3) (80.9)
Depreciation and amortization 12.7 13.3 25.2 26.1
Other non-cash items 0.8 0.9 2.2 1.6
Management adjustments 0.9 0.5 1.5 0.9
Other segment items 0.1 (0.2) 0.3 0.1
Adjusted Segment EBITDA $ 109.8 $ 85.9 $ 219.8 $ 176.2