Note 11 - Employee Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]

	December 31,
	2023		2022
Projected benefit obligation	$	3,540	$	3,406
Fair value of plan assets	$	2,791	$	2,712
Accumulated benefit obligation	$	3,376	$	3,238
Fair value of plan assets	$	2,791	$	2,712

Schedule of Net Benefit Costs [Table Text Block]

	Domestic pension benefits									International pension benefits									Postretirement benefits
	2023			2022			2021			2023			2022			2021			2023			2022			2021
Service cost	$	80		$	105		$	102		$	18		$	22		$	25		$	5		$	9		$	10
Interest cost		168			98			78			20			11			10			23			15			15
Expected return on plan assets		(176	)		(210	)		(209	)		(13	)		(9	)		(7	)
Amortization of prior service cost (credit)		6			6			4						(1	)		(1	)		(5	)		(5	)		(6	)
Amortization of actuarial (gain) loss																				(22	)		(5	)		2
Recognition of actuarial (gain) loss		(16	)		29			10			1			8			1
Total net periodic benefit expense (income)	$	62		$	28		$	(15	)	$	26		$	31		$	28		$	1		$	14		$	21
Settlement charge													$	2
Curtailment charge	$	3
Special termination benefit charge		15		$	2														$	1
Total expense (income)	$	80		$	30		$	(15	)	$	26		$	33		$	28		$	2		$	14		$	21
Other changes in plan assets and benefit obligations recognized in other comprehensive (loss) income:
Curtailment effects	$	(4	)
Settlements													$	11
Current year actuarial (loss) gain		(16	)	$	16		$	(105	)	$	14			(27	)	$	(7	)	$	5		$	(209	)	$	(105	)
Amortization of actuarial gain (loss)																				22			5			(2	)
Recognition of actuarial gain (loss)		16			(29	)		(10	)		1			20			(1	)
Current year prior service cost					28
Amortization of prior service (cost) credit		(6	)		(6	)		(4	)					1			1			(8	)		5			6
Total recognized in other comprehensive (loss) income	$	(10	)	$	9		$	(119	)	$	15		$	5		$	(7	)	$	19		$	(199	)	$	(101	)

Defined Benefit Plan, Assumptions [Table Text Block]

	Pension benefits
	Domestic									International									Postretirement benefits
	2023			2022			2021			2023			2022			2021			2023			2022			2021
Discount rate		5.16	%		5.50	%		2.87	%		2.30	%		2.46	%		1.20	%		5.24	%		5.58	%		2.99	%
Rate of compensation increase		3.97	%		3.48	%		3.50	%		3.74	%		3.73	%		3.63	%
Cash balance crediting rate		4.22	%		4.14	%		3.86	%		0.82	%		0.82	%		0.91	%
Employee contributions crediting rate		5.25	%		4.62	%		1.57	%

	Pension benefits
	Domestic									International									Postretirement benefits
	2023			2022			2021			2023			2022			2021			2023			2022			2021
Discount rate		5.50	%		2.88	%		2.50	%		2.46	%		1.20	%		1.02	%		5.58	%		2.99	%		2.69	%
Expected return on plan assets		6.75	%		6.00	%		6.00	%		3.85	%		1.64	%		1.26	%
Rate of compensation increase		3.87	%		3.50	%		4.16	%		3.73	%		3.63	%		3.55	%
Cash balance crediting rate		3.86	%		3.86	%		3.84	%		0.82	%		0.91	%		0.94	%
Employee contributions crediting rate		4.62	%		1.57	%		0.62	%

Schedule of Health Care Cost Trend Rates [Table Text Block]

Assumed health care trend rates as of December 31	2023		2022
Health care cost trend rate assumed for next year (pre-65 / post-65 retirees)	6.75% / 14.75%		7.00% / 4.25%
Ultimate health care trend rate	5	%	5	%
Year that the rate reaches the ultimate trend rate	2031		2031

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	December 31, 2023								December 31, 2022
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Equity securities:
U.S. companies	$	1,260	$	9	$	1,251			$	1,168	$	63	$	1,105
International companies
Fixed income:
U.S. treasury bonds		204		204						400		400
U.S. corporate bonds		946				946				1,060				1,060
Preferred securities		1				1				1				1
Private equity (1)										24					$	24
Real estate (2)		3					$	3		7						7
Cash equivalents		346		339		7				28		28
Total	$	2,760	$	552	$	2,205	$	3	$	2,688	$	491	$	2,166	$	31

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Domestic						International
	Private equity			Real estate			Mortgages		Insurance contracts		Other
Balance as of December 31, 2021	$	41		$	10		$	22	$	2
Actual return on plan assets relating to assets still held at the reporting date		(8	)					1
Actual return on plan assets relating to assets sold during the reporting period								1
Asset (sales) purchases		(9	)		(3	)		18		190	$	11
Balance as of December 31, 2022	$	24		$	7		$	42	$	192	$	11
Actual return on plan assets relating to assets still held at the reporting date		(12	)					1
Actual return on plan assets relating to assets sold during the reporting period
Asset (sales) purchases		(12	)		(4	)				3		1
Balance as of December 31, 2023	$	—		$	3		$	43	$	195	$	12

Schedule of Expected Benefit Payments [Table Text Block]

	Expected benefit payments
	Domestic pension benefits		International pension benefits		Postretirement benefits
2024	$	260	$	30	$	28
2025	$	257	$	38	$	28
2026	$	260	$	39	$	29
2027	$	267	$	39	$	29
2028	$	267	$	44	$	29
2029-2033	$	1,401	$	237	$	148

Pension Plan [Member]

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Domestic pension benefits						International pension benefits						Postretirement benefits
	2023			2022			2023			2022			2023			2022
Change in benefit obligation
Benefit obligation at beginning of year	$	3,182		$	4,075		$	549		$	736		$	434		$	654
Service cost		80			105			18			22			5			9
Interest cost		168			98			20			11			23			15
Plan participants’ contributions														9			7
Plan amendments					28
Actuarial gain		89			(925	)		9			(137	)		(7	)		(209	)
Other (1)		14			3			(3	)		(1	)		1
Benefits paid		(222	)		(202	)		(25	)		(21	)		(40	)		(42	)
Foreign currency translation								10			(61	)
Benefit obligation at end of year	$	3,311		$	3,182		$	578		$	549		$	425		$	434
Change in plan assets
Fair value of plan assets at beginning of year	$	2,683		$	3,598		$	381		$	584		$	5		$	9
Actual gain (loss) on plan assets		281			(728	)		10			(139	)
Employer contributions		18			15			32			8			26			31
Plan participants’ contributions														9			7
Benefits paid		(222	)		(202	)		(25	)		(21	)		(40	)		(42	)
Foreign currency translation								7			(51	)
Fair value of plan assets at end of year	$	2,760		$	2,683		$	405		$	381		$	—		$	5
Funded status at end of year
Fair value of plan assets	$	2,760		$	2,683		$	405		$	381		$	—		$	5
Benefit obligations		(3,311	)		(3,182	)		(578	)		(549	)		(425	)		(434	)
Funded status of plans	$	(551	)	$	(499	)	$	(173	)	$	(168	)	$	(425	)	$	(429	)
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent asset							$	24		$	26
Current liability	$	(17	)	$	(18	)		(8	)		(7	)	$	(27	)	$	(22	)
Noncurrent liability		(534	)		(481	)		(189	)		(187	)		(398	)		(407	)
Recognized liability	$	(551	)	$	(499	)	$	(173	)	$	(168	)	$	(425	)	$	(429	)
Amounts recognized in accumulated other comprehensive loss consist of:
Net actuarial loss (gain)	$	259		$	259		$	10		$	(2	)	$	(212	)	$	(226	)
Prior service cost (credit)		34			44						(1	)		(10	)		(15	)
Amounts recognized at end of year	$	293		$	303		$	10		$	(3	)	$	(222	)	$	(241	)

Foreign Plan [Member] | Pension Plan and Other Postretirement Benefits Plan [Member]

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	December 31, 2023								December 31, 2022
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Fixed income:
International fixed income	$	96	$	96					$	87	$	87
Insurance contracts		195					$	195		192					$	192
Mortgages		43						43		42						42
Cash equivalents		59		59						48		48
Other		12						12		12		1				11
Total	$	405	$	155	$	-	$	250	$	381	$	136	$	-	$	245