v3.4.0.3
Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]  
Schedule of regulatory assets and reserves related to manufactured gas plant sites
We have established the following regulatory assets and reserves related to manufactured gas plant sites:
(in millions)
 
March 31, 2016
 
December 31, 2015
Regulatory assets
 
$
683.7

 
$
697.0

Reserves for future remediation
 
617.5

 
628.0