v3.26.3
Derivative Instruments (Fair Values of Derivative Assets and Liabilities) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Assets:          
Current $ 314.6   $ 314.6   $ 135.0
Long-term 616.2   616.2   113.8
Total 930.8   930.8   248.8
Liability:          
Current 117.6   117.6   136.3
Long-term 175.8   175.8   123.4
Total 293.4   293.4   259.7
Cross-currency and interest rate derivative contracts          
Assets:          
Current 295.1   295.1   127.1
Long-term 612.5   612.5   113.8
Total 907.6   907.6   240.9
Liability:          
Current 104.5   104.5   126.2
Long-term 174.6   174.6   122.0
Total 279.1   279.1   248.2
Gain (loss) on change in credit risk valuation included in realized and unrealized gains (losses) on derivative instruments, net (9.7) $ (6.1) (6.7) $ 3.3  
Foreign currency forward and option contracts          
Assets:          
Current 3.5   3.5   0.1
Long-term 1.0   1.0   0.0
Total 4.5   4.5   0.1
Liability:          
Current 1.3   1.3   1.9
Long-term 1.2   1.2   0.9
Total 2.5   2.5   2.8
Other          
Assets:          
Current 16.0   16.0   7.8
Long-term 2.7   2.7   0.0
Total 18.7   18.7   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