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Debt And Interest Expense (Tables)
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Schedule of Debt [Table Text Block]
The following table summarizes information related to our Senior notes:
Issuance DateMaturity DateInterest RatePrincipal
As of December 31,
20242023
(in millions except interest rates)
Senior notes due 2025March 27, 2015April 1, 20255.25 %$500.0 $500.0 
Senior notes due 2027July 5, 2017July 15, 20274.75 %550.0 550.0 
Senior notes due 2031June 8, 2021June 15, 20312.70 %750.0 750.0 
Less: unamortized issuance costs(7.7)(9.8)
Total senior notes
1,792.3 1,790.2 
Less: current portion of senior notes due 2025
(299.8)— 
Total long-term senior notes
$1,492.5 $1,790.2