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Contingencies Schedule of FCPA Expenses (Tables)
 6 Months Ended
Jul. 31, 2018
Commitments and Contingencies Disclosure [Abstract]  
Foreign corrupt practices act expenses
For the three and six months ended July 31, 2018 and 2017, the Company incurred the following third-party expenses in connection with the FCPA investigation and related matters:
 
 
Three Months Ended July 31,
 
Six Months Ended July 31,
(Amounts in millions)
 
2018
 
2017
 
2018
 
2017
Ongoing inquiries and investigations
 
$
5

 
$
7

 
$
8

 
$
20

Global compliance program and organizational enhancements
 
3

 
5

 
7

 
8

Total
 
$
8

 
$
12

 
$
15

 
$
28