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Financing Arrangements - Long-term debt - Stated value (Details 3) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Long-term Debt, Excluding Current Maturities |  |  |  |
Stated value of issued debt | $ 3,395.6 |  | $ 3,975.0 |
Fair value adjustment of debt | 7.7 |  | 10.4 |
Debt Instrument, Unamortized Discount | 6.1 |  | 6.6 |
Total long term debt | 3,397.2 |  | 3,978.8 |
Stated value of current portion of issued debt | 983.9 |  | 594.8 |
Fair value adjustment of current portion of long-term debt | 2.0 |  | 2.3 |
Debt Instrument, Unamortized Discount, Current | 0.6 |  | 0.5 |
Carrying Value, current portion | 985.3 |  | 596.6 |
Stated value of noncurrent portion of issued debt | 2,411.7 |  | 3,380.2 |
Fair Market Value Adjustment, Total long term debt noncurrent | 5.7 |  | 8.1 |
Debt Instrument, Unamortized Discount, Noncurrent | 5.5 |  | 6.1 |
Total long-term debt, less current maturities | 2,411.9 |  | 3,382.2 |
Letters of Credit Outstanding, Amount | 50.0 |  |  |
Repayments of Subordinated Debt | 550.0 |  |  |
Maturities of Long-term Debt |  |  |  |
2023 | 985.3 |  |  |
2024 | 110.8 |  |  |
2025 | 21.9 |  |  |
2026 | 21.7 |  |  |
2027 | 707.8 |  |  |
Thereafter | 1,549.7 |  |  |
Total long term debt | 3,397.2 |  | 3,978.8 |
Mosaic Credit Facility |  |  |  |
Long-term Debt, Excluding Current Maturities |  |  |  |
Letters of Credit Outstanding, Amount | $ 10.9 |  | $ 10.9 |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.15% |  | 0.40% | 0.40%
Senior Notes | Senior Notes Due 2022 [Member] |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 3.25% |  |  |
Long term debt including current maturities | $ 550.0 |  |  |
Senior Notes | Senior Notes Due 2027 [Member] |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 4.05% |  |  |
Long term debt including current maturities | $ 700.0 |  |  |
Senior Notes | Senior Notes Due 2023 |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 4.25% |  |  |
Long term debt including current maturities | $ 900.0 |  |  |
Senior Notes | Senior Notes Due 2033 |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 5.45% |  |  |
Long term debt including current maturities | $ 500.0 |  |  |
Senior Notes | Senior Notes Due 2043 |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 5.625% |  |  |
Long term debt including current maturities | $ 600.0 |  |  |
Senior Notes | Senior Notes Due 2041 |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 4.875% |  |  |
Long term debt including current maturities | $ 300.0 |  |  |
Debentures | Debentures Due 2028 |  |  |  |
Stated interest rates: |  |  |  |
Long term debt including current maturities | $ 147.1 |  |  |
Unsecured Notes |  |  |  |
Stated interest rates: |  |  |  |
Effective interest rate | 5.10% |  |  |
Long-term Debt, Excluding Current Maturities |  |  |  |
Stated value of issued debt | $ 3,000.0 |  | $ 3,550.0 |
Fair value adjustment of debt | 0.0 |  | 0.0 |
Debt Instrument, Unamortized Discount | 6.1 |  | 6.6 |
Total long term debt | $ 2,993.9 |  | 3,543.4 |
Maturity year - earliest | Jan. 01, 2023 |  |  |
Maturity year - latest | Dec. 31, 2043 |  |  |
Maturities of Long-term Debt |  |  |  |
Total long term debt | $ 2,993.9 |  | 3,543.4 |
Unsecured Notes | Minimum |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 4.05% |  |  |
Unsecured Notes | Maximum |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 5.63% |  |  |
Unsecured Debentures |  |  |  |
Stated interest rates: |  |  |  |
Effective interest rate | 7.19% |  |  |
Long-term Debt, Excluding Current Maturities |  |  |  |
Stated value of issued debt | $ 147.1 |  | 147.1 |
Fair value adjustment of debt | 0.6 |  | 0.7 |
Debt Instrument, Unamortized Discount | 0.0 |  | 0.0 |
Total long term debt | $ 147.7 |  | 147.8 |
Maturity year - latest | Dec. 31, 2028 |  |  |
Maturities of Long-term Debt |  |  |  |
Total long term debt | $ 147.7 |  | 147.8 |
Unsecured Debentures | Minimum |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 0.00% |  |  |
Unsecured Debentures | Maximum |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 7.30% |  |  |
Finance Leases |  |  |  |
Stated interest rates: |  |  |  |
Effective interest rate | 2.96% |  |  |
Long-term Debt, Excluding Current Maturities |  |  |  |
Stated value of issued debt | $ 194.3 |  | 213.0 |
Fair value adjustment of debt | 0.0 |  | 0.0 |
Debt Instrument, Unamortized Discount | 0.0 |  | 0.0 |
Total long term debt | $ 194.3 |  | 213.0 |
Maturity year - earliest | Jan. 01, 2023 |  |  |
Maturity year - latest | Dec. 31, 2032 |  |  |
Maturities of Long-term Debt |  |  |  |
Total long term debt | $ 194.3 |  | 213.0 |
Finance Leases | Minimum |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 0.67% |  |  |
Finance Leases | Maximum |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 19.72% |  |  |
Other |  |  |  |
Stated interest rates: |  |  |  |
Effective interest rate | 5.19% |  |  |
Long-term Debt, Excluding Current Maturities |  |  |  |
Stated value of issued debt | $ 54.2 | [1] | 64.9 |
Fair value adjustment of debt | 7.1 |  | 9.7 |
Debt Instrument, Unamortized Discount | 0.0 |  | 0.0 |
Total long term debt | $ 61.3 | [1] | 74.6 |
Maturity year - earliest | Jan. 01, 2023 |  |  |
Maturity year - latest | Dec. 31, 2026 |  |  |
Maturities of Long-term Debt |  |  |  |
Total long term debt | $ 61.3 | [1] | $ 74.6 |
Other | Minimum |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 6.53% |  |  |
Other | Maximum |  |  |  |
Stated interest rates: |  |  |  |
Stated interest rate | 8.00% |  |  |
[1] | Includes deferred financing fees related to our long term debt.

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