Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2015

Loss Contingencies [Line Items]

Schedule of Regulatory Assets and Reserves for Manufactured Gas Plant Sites

We have established the following reserves and regulatory assets related to manufactured gas plant sites:

	June 30, 2015		December 31, 2014
	(Millions of Dollars)
Regulatory Assets	$	670.7	$	45.9
Reserves for Future Remediation	$	608.6	$	32.6