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Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2025
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
The carrying amounts and estimated fair values of our financial instruments are as follows:
March 31, 2025December 31, 2024
Carrying AmountFair ValueCarrying AmountFair Value
Cash and cash equivalents$259.2 $259.2 $272.8 $272.8 
Accounts receivable1,067.4 1,067.4 1,113.3 1,113.3 
Equity securities1,370.2 1,370.2 1,486.8 1,486.8 
Accounts payable936.0 936.0 1,156.5 1,156.5 
Structured accounts payable arrangements383.8 383.8 402.3 402.3 
Short-term debt1,234.4 1,234.4 847.1 847.1 
Long-term debt, including current portion3,363.2 3,349.5 3,377.6 3,324.1