Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 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)	September 30, 2016		December 31, 2015
Regulatory assets	$	681.8	$	697.0
Reserves for future remediation	608.1		628.0