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Employee Benefit Plans (Pension Plans' Range Targets) (Details) | Dec. 31, 2018
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Equity Securities [Member] |
Summary of target allocation percentage of assets |
Target | 40.00%
U.S. Equity [Member] |
Summary of target allocation percentage of assets |
Target | 25.00%
International Equity [Member] |
Summary of target allocation percentage of assets |
Target | 15.00%
Fixed Income, Money Market, Cash and Guaranteed Investment Contracts [Member] |
Summary of target allocation percentage of assets |
Target | 60.00%
Fixed Income [Member] |
Summary of target allocation percentage of assets |
Target | 60.00%

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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=112275985&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=108410482&loc=d3e1928-114920 + Details
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