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Note 4 - Long-term Debt (Details Textual) - USD ($) $ in Millions |  | 9 Months Ended |
--- | --- | --- | ---
Nov. 09, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2021
Interest Paid, Excluding Capitalized Interest, Operating Activities |  | $ 121 | $ 127 |
2026 Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.875% |  |
2027 Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 7.00% |  |
2030 Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.75% |  |
2030 Notes [Member] | Forecast [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.375% |  |  |
Proceeds from Issuance of Debt | $ 1,300 |  |  |
The 2019 Senior Credit Facility [Member] | Forecast [Member] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 500
The 2019 Senior Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 300 |  |
The 2019 Senior Credit Facility [Member] | The 2019 Term Loan [Member] |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  | 2.60% |  |
The 2019 Senior Credit Facility [Member] | Term Loan [Member] |  |  |  |
Debt Instrument, Face Amount |  | $ 1,500 |  |
The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  | 2.30% |  |
Five Year Facility [Member] | Revolving Credit Facility [Member] | Forecast [Member] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | 425
Credit Facility Commitments Expiring January 2, 2026 [Member] | Revolving Credit Facility [Member] | Forecast [Member] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 75

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