Note 12 - Pension and Postretirement Benefit Plans - Fair Value of Pension Plan Assets (Details) - Pension Plan [Member] - USD ($) $ in Millions		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Fair value of plan assets		$ 596		$ 798
UNITED STATES
Fair value of plan assets		537		733		$ 781
UNITED STATES | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		20		31
UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	309		437
UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		202		259
UNITED STATES | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		6		6
Foreign Plan [Member]
Fair value of plan assets		59		65		69
Foreign Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets				0
Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		16		14
Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		43		51
Defined Benefit Plan, Equity Securities, US [Member]
Fair value of plan assets	[1],[2],[3]	20		31
Defined Benefit Plan, Equity Securities, US [Member] | UNITED STATES | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	[2]	20		31
Defined Benefit Plan, Equity Securities, US, Large Cap [Member]
Fair value of plan assets		19		30
Defined Benefit Plan, Equity Securities, US, Large Cap [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	19		30
Defined Benefit Plan, Equity Securities, Non-US [Member]
Fair value of plan assets		11		17
Defined Benefit Plan, Equity Securities, Non-US [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	11		17
Defined Benefit Plan, Equity Securities, Emerging Markets [Member]
Fair value of plan assets		9		10
Defined Benefit Plan, Equity Securities, Emerging Markets [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	9		10
Corporate Debt Securities [Member]
Fair value of plan assets		414		556
Corporate Debt Securities [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	249		356
Corporate Debt Securities [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		165		200
US Treasury Securities [Member]
Fair value of plan assets		8		24
US Treasury Securities [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		8		24
Debt Security, Government, Non-US [Member]
Fair value of plan assets		16		15
Debt Security, Government, Non-US [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		2		2
Debt Security, Government, Non-US [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		14		13
Defined Benefit Plan, Fixed Income Securities, Emerging Markets [Member]
Fair value of plan assets		7		10
Defined Benefit Plan, Fixed Income Securities, Emerging Markets [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	7		10
Insurance Contracts [Member]
Fair value of plan assets	[3]	49		57
Insurance Contracts [Member] | UNITED STATES | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		6	[3]	6	[3]	6
Insurance Contracts [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		43	[3]	51	[3]	$ 52
Defined Benefit Plan, Real Estate [Member]
Fair value of plan assets		14		14
Defined Benefit Plan, Real Estate [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	14		14
Other Securities [Member]
Fair value of plan assets		2		1
Other Securities [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		2		1
Defined Benefit Plan, Cash and Cash Equivalents [Member]
Fair value of plan assets		27		33
Defined Benefit Plan, Cash and Cash Equivalents [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		$ 27		$ 33

[1] Certain assets are measured at fair value using the net asset value (NAV) per share (or its equivalent) practical expedient and have not been classified in the fair value hierarchy.

[2] This category comprises a combination of small-, mid- and large-cap equity stocks that are allocated at the investment manager's discretion. Investments include common and preferred securities as well as equity funds that invest in these instruments.

[3] This category comprises contracts placed with insurance companies where the underlying assets are invested in fixed interest securities.