Note 19 - Fair Value Measurement of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Major US Plans [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	$ 4,105	$ 3,707
Major US Plans [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	212	193
Major US Plans [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	446	451
Major US Plans [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets		5		$ 7	$ 6
Major US Plans [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	3,447	3,058
Major US Plans [Member] | Defined Benefit Plan, Cash and Cash Equivalents
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	202	197
Major US Plans [Member] | Defined Benefit Plan, Cash and Cash Equivalents | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	202	197
Major US Plans [Member] | Equity Securities [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	201	254
Major US Plans [Member] | Equity Securities [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	201	254
Major US Plans [Member] | Investment Grade Bonds [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	440	446
Major US Plans [Member] | Investment Grade Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	440	446
Major US Plans [Member] | Real Estate [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	36	37
Major US Plans [Member] | Real Estate [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	36	37
Major US Plans [Member] | Global Balanced Asset Allocation Funds [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	327	514
Major US Plans [Member] | Global Balanced Asset Allocation Funds [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	327	514
Major US Plans [Member] | Hedge Funds [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	1,807	1,490
Major US Plans [Member] | Hedge Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	6	5
Major US Plans [Member] | Hedge Funds [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	1,801	1,485
Major US Plans [Member] | Private Equity [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	1,082	773
Major US Plans [Member] | Private Equity [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets		5		7	$ 6
Major US Plans [Member] | Private Equity [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	1,082	768
Major US Plans [Member] | Derivatives with Unrealized Gains [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	10	3
Major US Plans [Member] | Derivatives with Unrealized Gains [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	10	3
Major US Plans [Member] | Derivatives with Unrealized Losses [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets		(7)
Major US Plans [Member] | Derivatives with Unrealized Losses [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets		(7)
Major Non-U.S. Plans [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	626	696
Major Non-U.S. Plans [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	102	135
Major Non-U.S. Plans [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	96	135
Major Non-U.S. Plans [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	342	291	[1]	273
Major Non-U.S. Plans [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	86	135
Major Non-U.S. Plans [Member] | Defined Benefit Plan, Cash and Cash Equivalents
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	13	17
Major Non-U.S. Plans [Member] | Defined Benefit Plan, Cash and Cash Equivalents | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	13	10
Major Non-U.S. Plans [Member] | Defined Benefit Plan, Cash and Cash Equivalents | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets		7
Major Non-U.S. Plans [Member] | Equity Securities [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	38	36
Major Non-U.S. Plans [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	38	36
Major Non-U.S. Plans [Member] | Investment Grade Bonds [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	105	177
Major Non-U.S. Plans [Member] | Investment Grade Bonds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	49	87
Major Non-U.S. Plans [Member] | Investment Grade Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	56	90
Major Non-U.S. Plans [Member] | Real Estate [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	12	12
Major Non-U.S. Plans [Member] | Real Estate [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	12	12
Major Non-U.S. Plans [Member] | Global Balanced Asset Allocation Funds [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets		38
Major Non-U.S. Plans [Member] | Global Balanced Asset Allocation Funds [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets		38
Major Non-U.S. Plans [Member] | Hedge Funds [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	32	48
Major Non-U.S. Plans [Member] | Hedge Funds [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	32	48
Major Non-U.S. Plans [Member] | Private Equity [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	42	30
Major Non-U.S. Plans [Member] | Private Equity [Member] | Measured at NAV [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	42	30
Major Non-U.S. Plans [Member] | Global High Yield And Emerging Market Debt
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	2	2
Major Non-U.S. Plans [Member] | Global High Yield And Emerging Market Debt | Fair Value, Inputs, Level 1 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	2	2
Major Non-U.S. Plans [Member] | Insurance Contracts
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	382	336
Major Non-U.S. Plans [Member] | Insurance Contracts | Fair Value, Inputs, Level 2 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	40	45
Major Non-U.S. Plans [Member] | Insurance Contracts | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Of Plan Assets [Line Items]
Fair Value of Plan Assets	$ 342	$ 291	[1]	$ 273

[1] ^{During 2020 the Company reclassified certain investments from Level 2 to Level 3.}