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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