Note 4 - Long-term Debt - Long-term Debt Summary (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Long-term debt, gross	$ 6,239	$ 6,520
Less current portion	(15)	(15)
Long-term debt, less current portion and deferred financing costs	6,171	6,440
Borrowing availability under Revolving Credit Facility	469	496
Revolving Credit Facility [Member]
Long-term debt, gross	25	0
The 2017 Term Loan [Member]
Long-term debt, gross	0	295
Unamortized deferred loan costs	0	(4)
The 2019 Term Loan [Member]
Long-term debt, gross	1,190	1,190
Unamortized deferred loan costs	(17)	(21)
The 2021 Term Loan [Member]
Long-term debt, gross	1,474	1,485
Unamortized deferred loan costs	(4)	(4)
2026 Notes [Member]
Long-term debt, gross	700	700
Unamortized deferred loan costs	(3)	(4)
Unamortized premium	2	2
2027 Notes [Member]
Long-term debt, gross	750	750
Unamortized deferred loan costs	(6)	(7)
2030 Notes [Member]
Long-term debt, gross	800	800
Unamortized deferred loan costs	(10)	(11)
Notes 2031 [Member]
Long-term debt, gross	1,300	1,300
Unamortized deferred loan costs	$ (15)	$ (16)

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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