Related Party Transactions and Relationships (Tables)

12 Months Ended

Dec. 31, 2013

Related Party Transactions [Abstract]

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

	December 31
	2013		2012
	(millions)
Net receivable from GMO	$	32.7	$	26.2
Net receivable from Great Plains Energy	17.5		13.8