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CASH AND CASH EQUIVALENTS
3 Months Ended
Mar. 31, 2014
Cash and Cash Equivalents [Abstract]  
CASH AND CASH EQUIVALENTS
Cash and Cash Equivalents

Short-term investments with an original maturity of three months or less are reported as cash equivalents.

Significant noncash transactions were:
 
 
Three Months Ended March 31
(Millions)
 
2014
 
2013
Construction costs funded through accounts payable
 
$
92.3

 
$
59.8

Equity issued for employee stock ownership plan
 
1.7

 
2.7

Equity issued for stock-based compensation plans
 

 
16.0

Equity issued for reinvested dividends
 

 
3.0