XML 136 R101.htm IDEA: XBRL DOCUMENT

Related Party Transactions (Details) (ATC [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
ATC [Member]
Related party transaction [Line Items]
Related party expenses	$ 26.8	$ 27.7	$ 25.3
Due from Related Parties	$ 0.1	$ 0.2	$ 0.2

- Definition

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

+ References+ Details