Note 12 - Fair Value Measurements and Derivatives - Summary of Deferred Gains (Losses) Reported in AOCI (Details) - Cash Flow Hedging [Member] - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Deferred gain (loss) in AOCI	$ (5)	$ (33)
Gain (loss) expected to be reclassified into income in one year or less	(24)
Foreign Exchange Forward [Member]
Deferred gain (loss) in AOCI	(24)	6
Gain (loss) expected to be reclassified into income in one year or less	(24)
Interest Rate Contract [Member]
Deferred gain (loss) in AOCI	(11)	(3)
Currency Swap [Member]
Deferred gain (loss) in AOCI	$ 30	$ (36)