Note 12 - Pension and Postretirement Benefit Plans - Fair Value of Pension Plan Assets (Details) - Pension Plan [Member] - USD ($) $ in Millions		Dec. 31, 2025		Dec. 31, 2024		Dec. 31, 2023
Fair value of plan assets		$ 412		$ 418
UNITED STATES
Fair value of plan assets		391		394		$ 427
UNITED STATES | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		0		14
UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		223		212
UNITED STATES | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		0		0
UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	168		168
Foreign Plan [Member]
Fair value of plan assets		21		24		29
Foreign Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets		0		0
Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		18		16
Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		3		8
Defined Benefit Plan, Equity Securities [Member]
Fair value of plan assets		44
Defined Benefit Plan, Equity Securities [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	44
Defined Benefit Plan, Equity Securities, US [Member]
Fair value of plan assets	[2]			14
Defined Benefit Plan, Equity Securities, US [Member] | UNITED STATES | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	[2]			14
Defined Benefit Plan, Equity Securities, US [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	[2]			0
Defined Benefit Plan, Equity Securities, US [Member] | UNITED STATES | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	[2]			0
Defined Benefit Plan, Equity Securities, US [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1],[2]			0
Defined Benefit Plan, Equity Securities, US [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value of plan assets	[2]			0
Defined Benefit Plan, Equity Securities, US [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets	[2]			0
Defined Benefit Plan, Equity Securities, US [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets	[2]			0
Defined Benefit Plan, Equity Securities, US, Large Cap [Member]
Fair value of plan assets				15
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]			15
Corporate Debt Securities [Member]
Fair value of plan assets		264		307
Corporate Debt Securities [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		146		177
Corporate Debt Securities [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	118		130
Defined Benefit Plan, Equity Securities, Non-US [Member]
Fair value of plan assets				8
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]			8
US Treasury Securities [Member]
Fair value of plan assets		11		5
US Treasury Securities [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		11		5
Defined Benefit Plan, Equity Securities, Emerging Markets [Member]
Fair value of plan assets				5
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]			5
Debt Security, Government, Non-US [Member]
Fair value of plan assets		18		16
Debt Security, Government, Non-US [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		3		3
Debt Security, Government, Non-US [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		15		13
Collateralized Mortgage Obligations [Member]
Fair value of plan assets		11		9
Collateralized Mortgage Obligations [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		11		9
Insurance Contracts [Member]
Fair value of plan assets	[3]	3		8
Insurance Contracts [Member] | UNITED STATES | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		0		0		0
Insurance Contracts [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value of plan assets		3	[3]	8	[3]	$ 9
Employee Benefit Plan, Real Estate [Member]
Fair value of plan assets		6		6
Employee Benefit Plan, Real Estate [Member] | UNITED STATES | Fair Value Measured at Net Asset Value Per Share [Member]
Fair value of plan assets	[1]	6		6
Defined Benefit Plan, Fixed Income Securities, Emerging Markets [Member]
Fair value of plan assets				4
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]			4
Other Securities [Member]
Fair value of plan assets		5		3
Other Securities [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		2
Other Securities [Member] | Foreign Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		3		3
Defined Benefit Plan, Cash and Cash Equivalents [Member]
Fair value of plan assets		50		18
Defined Benefit Plan, Cash and Cash Equivalents [Member] | UNITED STATES | Fair Value, Inputs, Level 2 [Member]
Fair value of plan assets		$ 50		$ 18

[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.