OTHER CURRENT ASSETS (Tables)

12 Months Ended

Dec. 31, 2016

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Current Assets

	December 31,
	2016		2015
	(in millions)
Short-term portion of derivative assets (Note 21)	$	44.1	$	123.9
Regulatory assets (Note 6)		11.9		30.7
Prepaid expenses and other		36.2		18.4
Total other current assets	$	92.2	$	173.0