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Note 4 - Long-term Debt (Details Textual) - USD ($) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Feb. 19, 2021 | Jan. 02, 2019
Interest Paid, Excluding Capitalized Interest, Operating Activities | $ 89 | $ 95 |  |
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% |  |  |
The Amended 2019 Senior Credit Facility [Member] |  |  |  |
Debt Instrument, Commitments | $ 2,100 |  |  |
The Amended 2019 Senior Credit Facility [Member] | The 2017 Term Loan [Member] |  |  |  |
Debt Instrument, Commitments | 595 |  |  |
The Amended 2019 Senior Credit Facility [Member] | The 2019 Term Loan [Member] |  |  |  |
Debt Instrument, Commitments | 1,200 |  |  |
The Amended 2019 Senior Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 300 | $ 200
Debt Instrument, Commitments | $ 299 |  |  |
The 2019 Senior Credit Facility [Member] | The 2019 Term Loan [Member] |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 2.60% |  |  |
The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member] |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 2.30% |  |  |

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