Note 19 - Retirement Plans - (Details Textual) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Plans [Line Items]
Cash and cash equivalents	$ 362	$ 196
U.S. [Member]
Retirement Plans [Line Items]
Actuarial gain (loss)	549
Plan asset risk management percentage		12.00%
Notional amount	1,000	$ 1,700
Fair value of derivative instruments	10	(4)
Cash and cash equivalents	$ 17	$ 40
Term of each funds	10 or more years
Option to redeem interests in the fund	false
Redemption restrictions percentage	5.00%	5.00%
Target asset allocations	27.00%
U.S. [Member] \| Defined Benefit Plan, Cash and Cash Equivalents \| Hedge Funds [Member]
Retirement Plans [Line Items]
Cash liquidity reserves	$ 87	$ 89
Non-US [Member] \| Government Bond Exposure Obtained Through Derivatives [Member]
Retirement Plans [Line Items]
Percentage of securities exposure obtained through derivatives	0.00%	0.00%
Cash Balance Plan [Member]
Retirement Plans [Line Items]
Defined Benefit Plan Contributions By Employer Minimum Percentage Of Employee Salary	9.00%
Defined Benefit Plan Contributions By Employer Maximum Percentage Of Employee Salary	10.00%
Defined benefit plan, Settlement amount		$ 121
Settlement losses		9
Defined Benefit Plans [Member] \| U.S. [Member]
Retirement Plans [Line Items]
Actuarial gain (loss)	$ 86	(299)
Defined benefit plan increase (decrease) in discount rate	105	(276)
Gain on plan assets	716	495
Gains (losses) on derivative instruments, net	(23)	159
Defined benefit plan, Settlement amount		121
Curtailment gains			$ 2
Settlement losses		9
Defined Benefit Plans [Member] \| Non-US [Member]
Retirement Plans [Line Items]
Actuarial gain (loss)	(21)	(39)
Gain on plan assets	$ 32	$ 20
Curtailment gains			$ 5

Cash liquidity reserves.

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- Definition

The maximum percentage of employee's salary plus interest contributed to employee retirement account by the employer.

+ References

No definition available.

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The minimum percentage of employee's salary plus interest contributed to employee retirement account by the employer.

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Defined benefit plan gain loss increase decrease in discount rate.

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Defined benefit plan, plan asset risk management percentage.

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Percentage of securities exposure obtained through derivatives.

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Retirement plans.

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No definition available.

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

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Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

+ References

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Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

+ References

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- Definition

Amount of payment, which decreases benefit obligation of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Excludes decreases to benefit obligation for remeasurement due to settlement.

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Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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- Definition

Aggregate net fair value of all derivative instruments designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

+ References

No definition available.

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Nominal or face amount used to calculate payment on derivative.

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Describes the terms and conditions for redemption of the entity's investment, or portion thereof (for example, quarterly redemption with 60 days notice), for each of those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments), by major category.

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Indicates (true false) whether otherwise redeemable investment for which net asset value per share is calculated, cannot be redeemed.

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The percentage of the total value of investments that cannot be redeemed because of a redemption restriction as of the statement of financial position date.

+ References

No definition available.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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