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Note 15 - Debt (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Debt [Table Text Block] |
|  | Issuance |  | Maturity |  |  |  |  |  |  |  |
|  | Date |  | Date |  | 2021 |  |  | 2020 |
Short-term debt and current portion of long-term debt: |  |  |  |  |  |  |  |  |  |  |  |
Syndicated revolving credit facility |  | Various |  | Various |  | $ | 610.0 |  |  | $ | 50.0 |
Senior notes: |  |  |  |  |  |  |  |  |  |  |  |
4.125% senior notes, less unamortized discount and debt issuance costs of $(0.4) |  | 9/12/2012 |  | 9/12/2022 |  |  | 349.6 |  |  |  | — |
5.800% senior notes, less unamortized discount and debt issuance costs of $0.1 |  | 4/6/2011 |  | 5/1/2021 |  |  | — |  |  |  | 449.9 |
Finance lease liabilities (1) |  | Various |  | Various |  |  | 11.7 |  |  |  | 14.4 |
Short-term debt and current portion of long-term debt |  |  | 971.3 |  |  |  | 514.3 |
Long-term debt: |  |  |  |  |  |  |  |  |  |  |  |
Senior notes: |  |  |  |  |  |  |  |  |  |  |  |
3.625% senior notes, less unamortized discount and debt issuance costs of $(10.3) and $(10.7), respectively |  | 5/13/2020 |  | 5/15/2050 |  |  | 489.7 |  |  |  | 489.3 |
4.125% senior notes, inclusive of unamortized premium, and net of unamortized discount and debt issuance costs of $10.9 and $12.4, respectively |  | 3/6/2019 |  | 3/15/2029 |  |  | 610.9 |  |  |  | 612.4 |
4.000% senior notes, less unamortized discount and debt issuance costs of $(4.1) and $(5.4), respectively |  | 5/15/2015 |  | 6/15/2025 |  |  | 895.9 |  |  |  | 894.6 |
5.500% senior notes, less unamortized discount and debt issuance costs of $(4.1) and $(4.3), respectively |  | 5/15/2015 |  | 6/15/2045 |  |  | 345.9 |  |  |  | 345.7 |
4.125% senior notes, less unamortized discount and debt issuance costs of $(1.1) |  | 9/12/2012 |  | 9/12/2022 |  |  | — |  |  |  | 348.9 |
Finance lease liabilities (1) |  | Various |  | Various |  |  | 1.6 |  |  |  | 10.3 |
Syndicated revolving credit facility debt issuance costs |  | Various |  | Various |  |  | (1.2 | ) |  |  | (1.6 | )
Long-term debt |  |  | 2,342.8 |  |  |  | 2,699.6 |
Total debt |  | $ | 3,314.1 |  |  | $ | 3,213.9 |
Schedule of Maturities of Long-term Debt [Table Text Block] |
Years Ending |  | Amount |
2022 |  | $ | 971.7 |
2023 |  |  | 1.3 |
2024 |  |  | 0.4 |
2025 |  |  | 900.1 |
2026 |  |  | — |
2027 and thereafter |  |  | 1,450.0 |
Total |  | $ | 3,323.5 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of maturity and sinking fund requirement for long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601 + Details
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