Financial Instruments (Policies)	12 Months Ended
Dec. 31, 2018
Financial Instruments [Abstract]
Derivatives, Offsetting Fair Value Amounts, Policy [Policy Text Block]	Excludes netting of cash collateral received and posted.

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41675-113959

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