Employee Benefit Plans (Asset Target Allocation) (Details)	Dec. 31, 2018
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Actual %	51.00%
Equity securities \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target %	41.00%
Equity securities \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target %	60.00%
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Actual %	41.00%
Fixed income securities \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target %	40.00%
Fixed income securities \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target %	50.00%
Other
Defined Benefit Plan Disclosure [Line Items]
Actual %	8.00%
Other \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target %	0.00%
Other \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target %	10.00%

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No definition available.

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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

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- Definition

Percentage of actual 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/2009/role/commonPracticeRef
-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

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