v3.26.1
Derivative Instruments (Fair Values of Derivative Assets and Liabilities) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Assets:          
Current $ 150.4   $ 150.4   $ 135.0
Long-term 122.8   122.8   113.8
Total 273.2   273.2   248.8
Liability:          
Current 124.7   124.7   136.3
Long-term 57.4   57.4   123.4
Total 182.1   182.1   259.7
Cross-currency and interest rate derivative contracts          
Assets:          
Current 135.3   135.3   127.1
Long-term 121.7   121.7   113.8
Total 257.0   257.0   240.9
Liability:          
Current 112.5   112.5   126.2
Long-term 56.1   56.1   122.0
Total 168.6   168.6   248.2
Gain (loss) on change in credit risk valuation included in realized and unrealized gains (losses) on derivative instruments, net 2.6 $ 5.2 3.0 $ 9.4  
Foreign currency forward and option contracts          
Assets:          
Current 2.1   2.1   0.1
Long-term 0.7   0.7   0.0
Total 2.8   2.8   0.1
Liability:          
Current 0.4   0.4   1.9
Long-term 1.3   1.3   0.9
Total 1.7   1.7   2.8
Other          
Assets:          
Current 13.0   13.0   7.8
Long-term 0.4   0.4   0.0
Total 13.4   13.4   7.8
Liability:          
Current 11.8   11.8   8.2
Long-term 0.0   0.0   0.5
Total $ 11.8   $ 11.8   $ 8.7