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Financial Instruments (Policies)	12 Months Ended
	Dec. 31, 2017
Financial Instruments [Abstract]
Derivatives, Offsetting Fair Value Amounts, Policy [Policy Text Block]	Excludes netting of cash collateral received and posted.

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- Definition

Financial Instruments [Abstract]

+ References

No definition available.

+ Details

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- Definition

Disclosure of accounting policy for offsetting or not offsetting fair value amounts recognized for derivative instruments against such amounts recognized for the right to reclaim cash collateral (a receivable) or the obligation to return cash collateral (a payable) arising from derivative instruments recognized at fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41675-113959

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