Note 11 - Financing Agreements - Long-term Debt (Details) - USD ($) $ in Millions		Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Debt issuance costs		$ (31)		$ (28)
Long-term debt		2,874		2,356
Less: Current portion of long-term debt		35		20
Long-term debt, less debt issuance costs		$ 2,839		2,336
Senior Notes due December 15, 2024 [Member]
Long-term debt, interest rate		5.50%
Long-term debt, gross		$ 425		425
Senior Notes due April 15, 2025 [Member]
Long-term debt, interest rate	[1]	5.75%
Long-term debt, gross	[1]	$ 400		400
Senior Notes due June 1, 2026 [Member]
Long-term debt, interest rate	[1]	6.50%
Long-term debt, gross	[1]	$ 375		375
Senior Notes due November 15, 2027 [Member]
Long-term debt, interest rate		5.375%	5.375%
Long-term debt, gross		$ 400		300
Senior Notes due June 15, 2028 [Member]
Long-term debt, interest rate		5.625%	5.625%
Long-term debt, gross		$ 400
The Term A Facility [Member]
Long-term debt, gross		467		474
The Term B Facility [Member]
Long-term debt, gross		349		349
Other Indebtedness [Member]
Long-term debt, gross		$ 89		$ 61

[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 12 for additional information.