Related Party Transactions and Relationships (Tables)

9 Months Ended

Sep. 30, 2017

Related Party Transactions [Abstract]

Schedule of related party receivables and payables [Table Text Block]

The following table summarizes KCP&L's related party net receivables.

	September 30		December 31
	2017			2016
	(millions)
Net receivable from GMO	$	55.1		$	64.6
Net receivable from Great Plains Energy	27.0			2.6