Note 13 - Fair Value Measurements and Derivatives - Summary of Deferred Gains (Losses) Reported in AOCI (Details) - Cash Flow Hedging [Member] - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Deferred gain (loss) in AOCI	$ (2)	$ 6
Gain (loss) expected to be reclassified into income in one year or less	(2)
Foreign Exchange Forward [Member]
Deferred gain (loss) in AOCI	0	9
Gain (loss) expected to be reclassified into income in one year or less	0
Interest Rate Contract [Member]
Deferred gain (loss) in AOCI	(2)	(6)
Gain (loss) expected to be reclassified into income in one year or less	(2)
Currency Swap [Member]
Deferred gain (loss) in AOCI		$ 3