Note 3 - Long-term Debt - Long-term Debt Summary (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Long-term debt, gross	$ 3,760	$ 3,760
Long-term debt, less deferred financing costs	3,700	3,697
Less current portion	0	0
Long-term debt, less current portion and deferred financing costs	3,700	3,697
Borrowing availability under 2019 Revolving Credit Facility	200	200
The 2017 Term Loan [Member]
Long-term debt, gross	595	595
The 2019 Term Loan [Member]
Long-term debt, gross	1,190	1,190
2024 Notes [Member]
Long-term debt, gross	525	525
Unamortized deferred loan costs	(5)	(5)
Unamortized deferred loan costs	(5)	(5)
2026 Notes [Member]
Long-term debt, gross	700	700
Unamortized deferred loan costs	(7)	(7)
Unamortized deferred loan costs	(7)	(7)
Unamortized premium	4	4
2027 Notes [Member]
Long-term debt, gross	750	750
Unamortized deferred loan costs	(11)	(11)
Unamortized deferred loan costs	(11)	(11)
The 2019 Senior Credit Facility [Member]
Long-term debt, gross	1,785
Unamortized deferred loan costs	(41)	(44)
Unamortized deferred loan costs	$ (41)	$ (44)

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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