SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES CASH AND CASH EQUIVALENTS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash and cash equivalents
Maximum term of original maturity to classify instruments as cash equivalent	3 months
Construction costs funded through accounts payable	$ 37.3	$ 24.8	$ 11.3