Note 4 - Long-term Debt - Long-term Debt Summary (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Long-term debt, gross	$ 6,778	$ 6,835
Less current portion	(15)	(15)
Long-term debt, less deferred financing costs	6,690	6,740
Borrowing availability under Revolving Credit Facility	496	497
The 2017 Term Loan [Member]
Long-term debt, gross	545	595
Unamortized deferred loan costs	(6)	(7)
The 2019 Term Loan [Member]
Long-term debt, gross	1,190	1,190
Unamortized deferred loan costs	(23)	(27)
The 2021 Term Loan [Member]
Long-term debt, gross	1,493	1,500
Unamortized deferred loan costs	(5)	(5)
2026 Notes [Member]
Long-term debt, gross	700	700
Unamortized deferred loan costs	(4)	(5)
Unamortized premium	2	3
2027 Notes [Member]
Long-term debt, gross	750	750
Unamortized deferred loan costs	(8)	(8)
2030 Notes [Member]
Long-term debt, gross	800	800
Unamortized deferred loan costs	(12)	(13)
Notes 2031 [Member]
Long-term debt, gross	1,300	1,300
Unamortized deferred loan costs	$ (17)	$ (18)

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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