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Employee Benefits - Asset Target Allocations Prescribed by Pension Funds' Investment Policies (Details) | Dec. 31, 2019
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Defined Benefit Plan Disclosure [Line Items] |
Total Target Allocation | 100.00%
Equity Securities, United States [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Total Target Allocation | 4.00%
Equity Securities, International [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Total Target Allocation | 2.00%
Fixed Income Securities [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Total Target Allocation | 87.00%
Defined Benefit Plan, Real Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Total Target Allocation | 4.00%
Other assets (measured at NAV) [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Total Target Allocation | 3.00%

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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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