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Note 20 - Retirement Plans - Fair Value Measurement of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Major US Plans [Member]
Fair Value of Plan Assets	$ 3,659	$ 4,105
Major US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	251	202
Major US Plans [Member] \| Global Equity Securities Funds [Member]
Fair Value of Plan Assets		201
Major US Plans [Member] \| Government Bonds [Member]
Fair Value of Plan Assets	39
Major US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	717	440
Major US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	29	36
Major US Plans [Member] \| Global Balanced Asset Allocation Funds [Member]
Fair Value of Plan Assets		327
Major US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	1,528	1,807
Major US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	1,095	1,082
Major US Plans [Member] \| Derivatives With Unrealized Gains [Member]
Fair Value of Plan Assets		10
Major Non-US Plans [Member]
Fair Value of Plan Assets	526	626
Major Non-US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	21	13
Major Non-US Plans [Member] \| Equity Securities [Member]
Fair Value of Plan Assets	31	38
Major Non-US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	80	105
Major Non-US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	11	12
Major Non-US Plans [Member] \| Global High Yield & Emerging Market Debt [Member]
Fair Value of Plan Assets	2	2
Major Non-US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	20	32
Major Non-US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	43	42
Major Non-US Plans [Member] \| Insurance Contracts [Member]
Fair Value of Plan Assets	318	382
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member]
Fair Value of Plan Assets	251	212
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	251	202
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member] \| Global Equity Securities Funds [Member]
Fair Value of Plan Assets		0
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member] \| Government Bonds [Member]
Fair Value of Plan Assets	0
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member] \| Global Balanced Asset Allocation Funds [Member]
Fair Value of Plan Assets		0
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] \| Major US Plans [Member] \| Derivatives With Unrealized Gains [Member]
Fair Value of Plan Assets		10
Fair Value, Inputs, Level 1 [Member] \| Major Non-US Plans [Member]
Fair Value of Plan Assets	89	102
Fair Value, Inputs, Level 1 [Member] \| Major Non-US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	21	13
Fair Value, Inputs, Level 1 [Member] \| Major Non-US Plans [Member] \| Equity Securities [Member]
Fair Value of Plan Assets	31	38
Fair Value, Inputs, Level 1 [Member] \| Major Non-US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	35	49
Fair Value, Inputs, Level 1 [Member] \| Major Non-US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] \| Major Non-US Plans [Member] \| Global High Yield & Emerging Market Debt [Member]
Fair Value of Plan Assets	2	2
Fair Value, Inputs, Level 1 [Member] \| Major Non-US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] \| Major Non-US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 1 [Member] \| Major Non-US Plans [Member] \| Insurance Contracts [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member]
Fair Value of Plan Assets	756	446
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member] \| Global Equity Securities Funds [Member]
Fair Value of Plan Assets		0
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member] \| Government Bonds [Member]
Fair Value of Plan Assets	39
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	717	440
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member] \| Global Balanced Asset Allocation Funds [Member]
Fair Value of Plan Assets		0
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	0	6
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major US Plans [Member] \| Derivatives With Unrealized Gains [Member]
Fair Value of Plan Assets		0
Fair Value, Inputs, Level 2 [Member] \| Major Non-US Plans [Member]
Fair Value of Plan Assets	74	96
Fair Value, Inputs, Level 2 [Member] \| Major Non-US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major Non-US Plans [Member] \| Equity Securities [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major Non-US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	45	56
Fair Value, Inputs, Level 2 [Member] \| Major Non-US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major Non-US Plans [Member] \| Global High Yield & Emerging Market Debt [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major Non-US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major Non-US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 2 [Member] \| Major Non-US Plans [Member] \| Insurance Contracts [Member]
Fair Value of Plan Assets	29	40
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member]
Fair Value of Plan Assets	3	0	$ 5	$ 7
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member] \| Global Equity Securities Funds [Member]
Fair Value of Plan Assets		0
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member] \| Government Bonds [Member]
Fair Value of Plan Assets	0
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member] \| Global Balanced Asset Allocation Funds [Member]
Fair Value of Plan Assets		0
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	3	0	5	7
Fair Value, Inputs, Level 3 [Member] \| Major US Plans [Member] \| Derivatives With Unrealized Gains [Member]
Fair Value of Plan Assets		0
Fair Value, Inputs, Level 3 [Member] \| Major Non-US Plans [Member]
Fair Value of Plan Assets	289	342	291	273
Fair Value, Inputs, Level 3 [Member] \| Major Non-US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major Non-US Plans [Member] \| Equity Securities [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major Non-US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major Non-US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major Non-US Plans [Member] \| Global High Yield & Emerging Market Debt [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major Non-US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major Non-US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	0	0
Fair Value, Inputs, Level 3 [Member] \| Major Non-US Plans [Member] \| Insurance Contracts [Member]
Fair Value of Plan Assets	289	342	$ 291	$ 273
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member]
Fair Value of Plan Assets	2,649	3,447
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	0	0
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member] \| Global Equity Securities Funds [Member]
Fair Value of Plan Assets		201
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member] \| Government Bonds [Member]
Fair Value of Plan Assets	0
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	0	0
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	29	36
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member] \| Global Balanced Asset Allocation Funds [Member]
Fair Value of Plan Assets		327
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	1,528	1,801
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	1,092	1,082
Fair Value Measured at Net Asset Value Per Share [Member] \| Major US Plans [Member] \| Derivatives With Unrealized Gains [Member]
Fair Value of Plan Assets		0
Fair Value Measured at Net Asset Value Per Share [Member] \| Major Non-US Plans [Member]
Fair Value of Plan Assets	74	86
Fair Value Measured at Net Asset Value Per Share [Member] \| Major Non-US Plans [Member] \| Cash and Cash Equivalents [Member]
Fair Value of Plan Assets	0	0
Fair Value Measured at Net Asset Value Per Share [Member] \| Major Non-US Plans [Member] \| Equity Securities [Member]
Fair Value of Plan Assets	0	0
Fair Value Measured at Net Asset Value Per Share [Member] \| Major Non-US Plans [Member] \| Investment Grade Bonds [Member]
Fair Value of Plan Assets	0	0
Fair Value Measured at Net Asset Value Per Share [Member] \| Major Non-US Plans [Member] \| Real Estate [Member]
Fair Value of Plan Assets	11	12
Fair Value Measured at Net Asset Value Per Share [Member] \| Major Non-US Plans [Member] \| Global High Yield & Emerging Market Debt [Member]
Fair Value of Plan Assets	0	0
Fair Value Measured at Net Asset Value Per Share [Member] \| Major Non-US Plans [Member] \| Hedge Funds [Member]
Fair Value of Plan Assets	20	32
Fair Value Measured at Net Asset Value Per Share [Member] \| Major Non-US Plans [Member] \| Private Equity Funds [Member]
Fair Value of Plan Assets	43	42
Fair Value Measured at Net Asset Value Per Share [Member] \| Major Non-US Plans [Member] \| Insurance Contracts [Member]
Fair Value of Plan Assets	$ 0	$ 0