Note 13 - Employee Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

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

	December 31,
	2021		2020
Projected benefit obligation	$	4,358	$	4,665
Fair value of plan assets	$	3,627	$	3,758
Accumulated benefit obligation	$	4,110	$	4,247
Fair value of plan assets	$	3,627	$	3,603

Schedule of Net Benefit Costs [Table Text Block]

	Domestic pension benefits									International pension benefits									Postretirement benefits
December 31,	2021			2020			2019			2021			2020			2019			2021			2020			2019
Service cost	$	102		$	92		$	76		$	25		$	26		$	25		$	10		$	9		$	9
Interest cost		78			110			133			10			12			15			15			20			27
Expected return on plan assets		(209	)		(186	)		(161	)		(7	)		(9	)		(10	)
Amortization of prior service cost (credit)		4			6			7			(1	)		(1	)		(1	)		(6	)		(5	)		(7	)
Amortization of actuarial loss (gain)																				2			1			(1	)
Recognition of actuarial loss		10			12			66			1			10			24
Total net periodic benefit (income) expense	$	(15	)	$	34		$	121		$	28		$	38		$	53		$	21		$	25		$	28
Special termination benefit charge					8			6															1			1
Total (income) expense	$	(15	)	$	42		$	127		$	28		$	38		$	53		$	21		$	26		$	29
Other changes in plan assets and benefit obligations recognized in other comprehensive (loss) income:
Curtailment effects													$	(4	)
Current year actuarial (gain) loss	$	(105	)	$	94		$	47		$	(7	)		(11	)	$	41		$	(105	)	$	58		$	6
Amortization of actuarial (loss) gain																				(2	)		(1	)		1
Recognition of actuarial loss		(10	)		(12	)		(66	)		(1	)		(10	)		(24	)
Current year prior service cost					1																					5
Amortization of prior service (cost) credit		(4	)		(6	)		(7	)		1			1			1			6		$	5			7
Total recognized in other comprehensive (loss) income	$	(119	)	$	77		$	(26	)	$	(7	)	$	(24	)	$	18		$	(101	)	$	62		$	19

Defined Benefit Plan, Assumptions [Table Text Block]

	Pension benefits
	Domestic									International									Postretirement benefits
	2021			2020			2019			2021			2020			2019			2021			2020			2019
Discount rate		2.87	%		2.50	%		3.28	%		1.20	%		1.02	%		1.34	%		2.99	%		2.69	%		3.41	%
Rate of compensation increase		3.50	%		4.16	%		3.50	%		3.63	%		3.55	%		2.96	%
Cash balance crediting rate		3.86	%		3.84	%		3.94	%		0.91	%		0.94	%		0.97	%
Employee contributions crediting rate		1.57	%		0.62	%		2.03	%

	Pension benefits
	Domestic									International									Postretirement benefits
	2021			2020			2019			2021			2020			2019			2021			2020			2019
Discount rate		2.50	%		3.28	%		4.28	%		1.02	%		1.34	%		1.96	%		2.69	%		3.41	%		4.33	%
Expected return on plan assets		6.00	%		6.00	%		6.00	%		1.26	%		1.71	%		2.01	%
Rate of compensation increase		4.16	%		3.50	%		3.50	%		3.55	%		2.96	%		2.96	%
Cash balance crediting rate		3.84	%		3.94	%		3.94	%		0.94	%		0.97	%		0.97	%
Employee contributions crediting rate		0.62	%		2.03	%		3.47	%

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

Assumed health care trend rates at December 31	2021			2020
Health care cost trend rate assumed for next year		6.25	%		6.50	%
Rate that the cost trend rate gradually declines to		5	%		5	%
Year that the rate reaches the ultimate trend rate	2027			2027

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

	December 31, 2021								December 31, 2020
(in millions)	Total		(Level 1)		(Level 2)		(Level 3)		Total		(Level 1)		(Level 2)		(Level 3)
Equity securities:
U.S. companies	$	977	$	20	$	957			$	781	$	1	$	780
International companies		234				234				441				441
Fixed income:
U.S. treasury bonds		256		256						147		147
U.S. corporate bonds		1,770				1,770				1,951				1,951
Preferred securities		11				11				11				11
Private equity (1)		41					$	41		51					$	51
Real estate (2)		10						10		140						140
Cash equivalents		308		308						83		83
Total	$	3,607	$	584	$	2,972	$	51	$	3,605	$	231	$	3,183	$	191

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

	Level 3 assets – domestic						Level 3 assets – international
(in millions)	Private equity			Real estate			Mortgages			Insurance contracts
Balance at December 31, 2019	$	64		$	145		$	21		$	2
Actual return on plan assets relating to assets still held at the reporting date		4
Asset (sales) purchases		(17	)		(5	)		(1	)		1
Balance at December 31, 2020	$	51		$	140		$	20		$	3
Actual return on plan assets relating to assets still held at the reporting date		21			1			2
Actual return on plan assets relating to assets sold during the reporting period					4
Asset sales		(31	)		(135	)					(1	)
Balance at December 31, 2021	$	41		$	10		$	22		$	2

Schedule of Expected Benefit Payments [Table Text Block]

	Expected benefit payments
	Domestic pension benefits		International pension benefits		Postretirement benefits
2022	$	232	$	28	$	33
2023	$	233	$	34	$	33
2024	$	242	$	33	$	33
2025	$	251	$	36	$	33
2026	$	254	$	40	$	33
2027-2031	$	1,333	$	221	$	166

Pension Plan [Member]

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Domestic pension benefits						International pension benefits						Postretirement benefits
December 31,	2021			2020			2021			2020			2021			2020
Change in benefit obligation
Benefit obligation at beginning of year	$	4,203		$	3,856		$	778		$	725		$	764		$	705
Service cost		102			92			25			26			10			9
Interest cost		78			110			10			12			15			20
Plan participants’ contributions					1									7			8
Plan amendments					1
Actuarial (gain) loss		(107	)		329			(17	)		29			(105	)		58
Other					8			(2	)		(37	)					2
Benefits paid		(201	)		(194	)		(26	)		(19	)		(37	)		(38	)
Foreign currency translation								(32	)		42
Benefit obligation at end of year	$	4,075		$	4,203		$	736		$	778		$	654		$	764
Change in plan assets
Fair value of plan assets at beginning of year	$	3,575		$	3,153		$	598		$	518		$	30
Actual gain (loss) on plan assets		208			420			(2	)		49
Employer contributions		16			195			31			50			9		$	60
Plan participants’ contributions					1									7			8
Benefits paid		(201	)		(194	)		(26	)		(44	)		(37	)		(38	)
Foreign currency translation								(17	)		25
Fair value of plan assets at end of year	$	3,598		$	3,575		$	584		$	598		$	9		$	30
Funded status at end of year
Fair value of plan assets	$	3,598		$	3,575		$	584		$	598		$	9		$	30
Benefit obligations		(4,075	)		(4,203	)		(736	)		(778	)		(654	)		(764	)
Funded status of plans	$	(477	)	$	(628	)	$	(152	)	$	(180	)	$	(645	)	$	(734	)
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent asset							$	100		$	99
Current liability	$	(15	)	$	(13	)		(7	)		(7	)	$	(23	)	$	(7	)
Noncurrent liability		(462	)		(615	)		(245	)		(272	)		(622	)		(727	)
Recognized liability	$	(477	)	$	(628	)	$	(152	)	$	(180	)	$	(645	)	$	(734	)
Amounts recognized in accumulated other comprehensive loss consist of:
Net actuarial loss (gain)	$	272		$	387		$	(3	)	$	7		$	(22	)	$	86
Prior service cost (credit)		22			26			1			1			(20	)		(26	)
Amounts recognized at end of year	$	294		$	413		$	(2	)	$	8		$	(42	)	$	60

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, 2021								December 31, 2020
(in millions)	Total		(Level 1)		(Level 2)		(Level 3)		Total		(Level 1)		(Level 2)		(Level 3)
Fixed income:
International fixed income	$	500	$	416	$	84			$	519	$	426	$	93
Insurance contracts		2					$	2		3					$	3
Mortgages		22						22		20						20
Cash equivalents		60		60						56		56
Total	$	584	$	476	$	84	$	24	$	598	$	482	$	93	$	23