XML 48 R35.htm IDEA: XBRL DOCUMENT v3.7.0.1
Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]  
Schedule Of Environmental Capital Expenditures [Table Text Block]
 
2017
2018
2019
2020
 
(millions)
Great Plains Energy
$
36.3

$
16.6

$
9.2

$
13.7

KCP&L
34.9

16.5

7.9

13.0