CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net Income	$ 101.0	$ 77.7
Other comprehensive income (loss):
Reclassification adjustment transferred to Net income from cash flow hedges	0.6	0.6
Pension and other postretirement benefit costs	0.6	(2.1)
Total Comprehensive Income	$ 102.2	$ 76.2