XML 55 R44.htm IDEA: XBRL DOCUMENT v3.25.2
Debt (Tables)
6 Months Ended
Jun. 30, 2025
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments Total amortized cost of Long-term Debt, Current and Non-Current, outstanding at June 30, 2025 and December 31, 2024 was:
(Dollars in Millions)Jun 30,
2025
Dec 31,
2024
Senior Notes:
Current:
    4.350% Senior Notes due February 15, 2025
$— $449.9 
Non-Current:
    2.400% Senior Notes due September 30, 2030
397.7 397.5 
    3.800% Senior Notes due February 23, 2032
396.7 396.5 
5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
148.2 147.7 
Total Long-term Debt Outstanding$942.6 $1,391.6