Note 12 - Financing Agreements - Long-term Debt (Details) - USD ($) $ in Millions		Sep. 30, 2021	May 28, 2021	May 13, 2021	Dec. 31, 2020
Debt issuance costs		$ (28)			$ (27)
Long-term debt		2,395			2,428
Less: Current portion of long-term debt		8			8
Long-term debt, less debt issuance costs		$ 2,387			2,420
Senior Notes due December 15, 2024 [Member]
Long-term debt, interest rate		5.50%
Long-term debt, gross		$ 0			425
Senior Notes due April 15, 2025 [Member]
Long-term debt, interest rate	[1]	5.75%
Long-term debt, gross		$ 400			400
Senior Notes due June 1, 2026 [Member]
Long-term debt, interest rate	[1]	6.50%
Long-term debt, gross		$ 0			375
Senior Notes due November 15, 2027 [Member]
Long-term debt, interest rate		5.375%
Long-term debt, gross		$ 400			400
Senior Notes due June 15, 2028 [Member]
Long-term debt, interest rate		5.625%
Long-term debt, gross		$ 400			400
Senior Notes Due July 15, 2029 [Member]
Long-term debt, interest rate		3.00%	3.00%
Long-term debt, gross		$ 376			0
Senior Notes DueSeptember 1, 2030 [Member]
Long-term debt, interest rate		4.25%		4.25%
Long-term debt, gross		$ 400			0
The Term B Facility [Member]
Long-term debt, gross		349			349
Other Indebtedness [Member]
Long-term debt, gross		$ 98			$ 106

[1] In conjunction with the issuance of the April 2025 Notes we entered into 8-year fixed-to-fixed cross-currency swaps which have the effect of economically converting the April 2025 Notes to euro-denominated debt at a fixed rate of 3.850%. In conjunction with the issuance of the June 2026 Notes we entered into 10-year fixed-to-fixed cross-currency swaps which have the effect of economically converting the June 2026 Notes to euro-denominated debt at a fixed rate of 5.140%. See Note 13 for additional information.