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Receivables, Net
12 Months Ended
Mar. 31, 2017
Receivables, Net, Current [Abstract]  
Receivables, Net
Receivables, Net
 
March 31,
(In millions)
2017
 
2016
Customer accounts
$
14,602

 
$
14,519

Other
3,893

 
3,711

Total
18,495

 
18,230

Allowances
(280
)
 
(250
)
Net
$
18,215

 
$
17,980



Other receivables primarily include amounts due from suppliers and customer unbilled receivables. The allowances are primarily for estimated uncollectible accounts.