v3.26.1
Long-term debt - current and non-current - Summary of undiscounted future cash outflows of long-term debt (Detail)
$ in Millions
6 Months Ended
Jun. 30, 2026
USD ($)
Debt Instrument [Line Items]  
Principal $ 2,627.9
Interest 675.2
Total 3,303.1
2026 [Member]  
Debt Instrument [Line Items]  
Principal 7.6
Interest 64.8
Total 72.4
2027 [Member]  
Debt Instrument [Line Items]  
Principal 15.8
Interest 127.9
Total 143.7
2028 [Member]  
Debt Instrument [Line Items]  
Principal 14.6
Interest 127.4
Total 142.0
2029 [Member]  
Debt Instrument [Line Items]  
Principal 15.1
Interest 126.3
Total 141.4
2030 [Member]  
Debt Instrument [Line Items]  
Principal 44.7
Interest 125.2
Total 169.9
Thereafter [Member]  
Debt Instrument [Line Items]  
Principal 2,530.1
Interest 103.6
Total $ 2,633.7