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Goodwill (Tables)
 9 Months Ended
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of Changes in the Carrying Amount of Goodwill by Segment
The following table summarizes the changes in the carrying amount of goodwill, by segment, as of December 31, 2018.
(in millions)
 
GBS
 
GIS
 
Total
Balance as of March 31, 2018, net
 
$
4,531

 
$
3,088

 
$
7,619

Acquisitions
 
242

 
—

 
242

Divestitures
 
(12
)
 
—

 
(12
)
Foreign currency translation
 
(153
)
 
(103
)
 
(256
)
Balance as of December 31, 2018, net
 
$
4,608

 
$
2,985

 
$
7,593