Note 19 - Reconciliation of Beginning and Ending Balances of Assets Measured With Significant Unobservable Inputs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Major US Plans [Member]
Pension Income Expense from Continuing and Discontinued Operations for Major Defined Benefit Plans [Line Items]
Fair value of plan assets at beginning of period	$ 3,707
Fair value of plan assets at end of period	4,105		$ 3,707
Major US Plans [Member] | Private Equity [Member]
Pension Income Expense from Continuing and Discontinued Operations for Major Defined Benefit Plans [Line Items]
Fair value of plan assets at beginning of period	773
Fair value of plan assets at end of period	1,082		773
Major US Plans [Member] | Fair Value, Inputs, Level 3 [Member]
Pension Income Expense from Continuing and Discontinued Operations for Major Defined Benefit Plans [Line Items]
Fair value of plan assets at beginning of period	5		7		$ 6
Net Realized and Unrealized Gains Relating to Assets Still Held	(5)		(2)		2
Net Purchases, Sales and Settlements					(1)
Fair value of plan assets at end of period			5		7
Major US Plans [Member] | Fair Value, Inputs, Level 3 [Member] | Private Equity [Member]
Pension Income Expense from Continuing and Discontinued Operations for Major Defined Benefit Plans [Line Items]
Fair value of plan assets at beginning of period	5		7		6
Net Realized and Unrealized Gains Relating to Assets Still Held	(5)		(2)		2
Net Purchases, Sales and Settlements					(1)
Fair value of plan assets at end of period			5		7
Major Non-U.S. Plans [Member]
Pension Income Expense from Continuing and Discontinued Operations for Major Defined Benefit Plans [Line Items]
Fair value of plan assets at beginning of period	696
Fair value of plan assets at end of period	626		696
Major Non-U.S. Plans [Member] | Private Equity [Member]
Pension Income Expense from Continuing and Discontinued Operations for Major Defined Benefit Plans [Line Items]
Fair value of plan assets at beginning of period	30
Fair value of plan assets at end of period	42		30
Major Non-U.S. Plans [Member] | Insurance Contracts
Pension Income Expense from Continuing and Discontinued Operations for Major Defined Benefit Plans [Line Items]
Fair value of plan assets at beginning of period	336
Fair value of plan assets at end of period	382		336
Major Non-U.S. Plans [Member] | Fair Value, Inputs, Level 3 [Member]
Pension Income Expense from Continuing and Discontinued Operations for Major Defined Benefit Plans [Line Items]
Fair value of plan assets at beginning of period	291	[1]	273
Net Realized and Unrealized Gains Relating to Assets Still Held	(37)		18
Net Purchases, Sales and Settlements	88
Fair value of plan assets at end of period	342		291	[1]	273
Major Non-U.S. Plans [Member] | Fair Value, Inputs, Level 3 [Member] | Insurance Contracts
Pension Income Expense from Continuing and Discontinued Operations for Major Defined Benefit Plans [Line Items]
Fair value of plan assets at beginning of period	291	[1]	273
Net Realized and Unrealized Gains Relating to Assets Still Held	(37)		18
Net Purchases, Sales and Settlements	88
Fair value of plan assets at end of period	$ 342		$ 291	[1]	$ 273

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