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Supplemental Cash Flow Information (Notes)
 12 Months Ended
Jan. 31, 2018
Supplemental Cash Flow Information [Abstract]  
Cash Flow, Supplemental Disclosures [Text Block]
SUPPLEMENTAL CASH FLOW INFORMATION

Cash paid during the year for:
 
Years Ended January 31,
 
(in millions)
2018

2017

2016

Interest, net of interest capitalization
          $
41.5

          $
40.6

          $
42.5

Income taxes
          $
156.2

          $
213.9

          $
237.5



Supplemental noncash investing and financing activities:
 
January 31,
 
(in millions)
2018

2017

2016

Accrued capital expenditures
          $
20.1

          $
10.7

          $
8.2