XML 33 R23.htm IDEA: XBRL DOCUMENT

Fair Value Measurements And Disclosure (Policy)	3 Months Ended
Fair Value Measurements And Disclosure (Policy)	Mar. 31, 2019
Fair Value Disclosures
Derivatives, Offsetting Fair Value Amounts, Policy [Policy Text Block]	We do not offset the fair value of collateral, whether the right to reclaim cash collateral (a receivable) or the obligation to return cash collateral (a payable) exists, against the fair value of the derivative instruments.