Note 12 - Fair Value Measurements and Derivatives - Summary of Deferred Gains (Losses) Reported in AOCI (Details) - Cash Flow Hedging [Member] - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Deferred gain (loss) in AOCI	$ 6	$ (33)
Gain (loss) expected to be reclassified into income in one year or less	(5)
Foreign Exchange Forward [Member]
Deferred gain (loss) in AOCI	(5)	6
Gain (loss) expected to be reclassified into income in one year or less	(5)
Interest Rate Contract [Member]
Deferred gain (loss) in AOCI	(9)	(3)
Currency Swap [Member]
Deferred gain (loss) in AOCI	$ 20	$ (36)