Note 12 - Fair Value Measurements and Derivatives - Outstanding Currency Derivatives (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
US Dollar Foreign Exchange Forward [Member]
Notional amount	$ 97
Euro Foreign Exchange Forward [Member]
Notional amount	84
British Pound Foreign Exchange Forward [Member]
Notional amount	6
South African Rand Foreign Exchange Forward [Member]
Notional amount	6
Canadian Dollar Foreign Exchange Forward [Member]
Notional amount	1
Brazilian Real Foreign Exchange Forward [Member]
Notional amount	43
Indian Rupee Foreign Exchange Forward [Member]
Notional amount	21
Chinese Renminbi Foreign Exchange Forward [Member]
Notional amount	5
Foreign Exchange Forward [Member]
Notional amount	263	$ 508
US Dollar Currency Swap [Member]
Notional amount	330
Euro Currency Swap [Member]
Notional amount	775
Currency Swap [Member]
Notional amount	1,105	$ 1,090
Foreign Exchange Contract [Member]
Notional amount	1,368
Designated as Hedging Instrument [Member] | US Dollar Foreign Exchange Forward [Member]
Notional amount	54
Designated as Hedging Instrument [Member] | Euro Foreign Exchange Forward [Member]
Notional amount	55
Designated as Hedging Instrument [Member] | South African Rand Foreign Exchange Forward [Member]
Notional amount	1
Designated as Hedging Instrument [Member] | Canadian Dollar Foreign Exchange Forward [Member]
Notional amount	1
Designated as Hedging Instrument [Member] | Brazilian Real Foreign Exchange Forward [Member]
Notional amount	32
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Notional amount	143
Designated as Hedging Instrument [Member] | US Dollar Currency Swap [Member]
Notional amount	330
Designated as Hedging Instrument [Member] | Euro Currency Swap [Member]
Notional amount	775
Designated as Hedging Instrument [Member] | Currency Swap [Member]
Notional amount	1,105
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Notional amount	1,248
Not Designated as Hedging Instrument [Member] | US Dollar Foreign Exchange Forward [Member]
Notional amount	43
Not Designated as Hedging Instrument [Member] | Euro Foreign Exchange Forward [Member]
Notional amount	29
Not Designated as Hedging Instrument [Member] | British Pound Foreign Exchange Forward [Member]
Notional amount	6
Not Designated as Hedging Instrument [Member] | South African Rand Foreign Exchange Forward [Member]
Notional amount	5
Not Designated as Hedging Instrument [Member] | Brazilian Real Foreign Exchange Forward [Member]
Notional amount	11
Not Designated as Hedging Instrument [Member] | Indian Rupee Foreign Exchange Forward [Member]
Notional amount	21
Not Designated as Hedging Instrument [Member] | Chinese Renminbi Foreign Exchange Forward [Member]
Notional amount	5
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Notional amount	120
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Notional amount	$ 120