SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

Reconciliation of the weighted average number of common shares

Reconciliations of the weighted average number of common shares for basic and diluted earnings per share computation purposes are as follows:     

	Second Quarter		Year to Date
Millions	2013	2012	2013	2012
Weighted Average Shares Outstanding - Basic	139.6	130.9	137.0	130.6
Effect of dilutive equity forward shares	—	2.2	0.9	2.1
Weighted Average Shares - Diluted	139.6	133.1	137.9	132.7