Note 4 - Long-term Debt - Long-term Debt Summary (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Long-term debt, gross	$ 6,835	$ 4,035
Less current portion	(15)	0
Long-term debt, less deferred financing costs	6,740	3,974
Borrowing availability under Revolving Credit Facility	497	200
The 2017 Term Loan [Member]
Long-term debt, gross	595	595
Unamortized deferred loan costs	(7)	(4)
The 2019 Term Loan [Member]
Long-term debt, gross	1,190	1,190
Unamortized deferred loan costs	(27)	(30)
The 2021 Term Loan [Member]
Long-term debt, gross	1,500	0
Unamortized deferred loan costs	(5)	0
2026 Notes [Member]
Long-term debt, gross	700	700
Unamortized deferred loan costs	(5)	(6)
Unamortized premium	3	3
2027 Notes [Member]
Long-term debt, gross	750	750
Unamortized deferred loan costs	(8)	(10)
2030 Notes [Member]
Long-term debt, gross	800	800
Unamortized deferred loan costs	(13)	(14)
Notes 2031 [Member]
Long-term debt, gross	1,300	0
Unamortized deferred loan costs	$ (18)	$ 0

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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