Borrowings and Lines of Credit Borrowings and lines of Credit (Current Year Actions) (Details)	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Debt Instrument [Line Items]
Average Years of Maturity of Long Term Debt	12 years
Average interest expense rate	3.40%	3.50%

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.

No definition available.

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