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Pension Plans and Other Post Employment Benefit Plans Target Allocation for Plan Assets (Details) | Dec. 31, 2020 | Dec. 31, 2019
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Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation for plan assets | 100.00% | 100.00%
Fixed Income Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation for plan assets | 51.00% | 50.00%
Hedge Funds [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation for plan assets | 2.00% | 3.00%
Private Market Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation for plan assets | 6.00% | 6.00%
Real Estate [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation for plan assets | 4.00% | 3.00%
Cash and Cash Equivalents [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation for plan assets | 1.00% | 2.00%
UNITED STATES | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation for plan assets | 20.00% | 20.00%
Non-US [Member] | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Target Allocation for plan assets | 16.00% | 16.00%

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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