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Note 18 - Restructuring Costs and Other - Restructuring Liabilities (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Restructuring Cost And Reserve [Line Items] |  |  |  |
Beginning Balance |  | $ 11 | $ 12 | $ 8
Charges |  | 6 | 17 | 16
Utilization/cash payments |  | (10) | (15) | (9)
Other adjustments & reclasses | [1] | (2) | (3) | (3)
Ending Balance |  | 5 | 11 | 12
Severance Reserve [Member] |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Beginning Balance | [2] | 10 | 11 | 6
Charges | [2] | 6 | 16 | 16
Utilization/cash payments | [2] | (10) | (14) | (8)
Other adjustments & reclasses | [1],[2] | (2) | (3) | (3)
Ending Balance | [2] | 4 | 10 | 11
Exit Costs Reserve [Member] |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Beginning Balance | [2] | 1 | 1 | 2
Charges | [2] |  | 1 |
Utilization/cash payments | [2] |  | (1) | (1)
Ending Balance | [2] | $ 1 | $ 1 | $ 1
[1] | The $2 million in 2021 and the $3 million in both 2020 and 2019 represented severance charges funded from pension plan assets, which were reclassified to Pension and other postretirement liabilities.
[2] | The severance and exit costs reserves require the outlay of cash. Any long-lived asset impairments and inventory write-downs would represent non-cash items.

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- Definition Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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