Installment Receivables (Tables)

9 Months Ended

Dec. 31, 2018

Receivables [Abstract]

Summary of Installment Receivables

The following table summarizes the installment receivables:

	December 31, 2018			March 31, 2018
	(in millions)
Installment receivables, gross	$	1,151		$	1,472
Deferred interest	(62		)	(106		)
Installment receivables, net of deferred interest	1,089			1,366
Allowance for credit losses	(195		)	(217		)
Installment receivables, net	$	894		$	1,149
Classified in the consolidated balance sheets as:
Accounts and notes receivable, net	$	675		$	995
Other assets	219			154
Installment receivables, net	$	894		$	1,149

Balance and Aging of Financing Receivables by Credit Category

The balance and aging of installment receivables on a gross basis by credit category were as follows:

	December 31, 2018						March 31, 2018
	Prime		Subprime		Total		Prime		Subprime		Total
	(in millions)						(in millions)
Unbilled	$	661	$	396	$	1,057	$	951	$	391	$	1,342
Billed - current	48		23		71		69		29		98
Billed - past due	12		11		23		17		15		32
Installment receivables, gross	$	721	$	430	$	1,151	$	1,037	$	435	$	1,472

Schedule of Activity in the Deferred Interest Allowance for Credit Losses

Activity in the deferred interest and allowance for credit losses for the installment receivables was as follows:

	Nine Months Ended			Twelve Months Ended
	December 31, 2018			March 31, 2018
	(in millions)
Deferred interest and allowance for credit losses, beginning of period	$	323		$	506
Adjustment to deferred interest on short- and long-term installment receivables due to Topic 606	(50		)	—
Bad debt expense	66			142
Write-offs, net of recoveries	(88		)	(224		)
Change in deferred interest on short- and long-term installment receivables	6			(101		)
Deferred interest and allowance for credit losses, end of period	$	257		$	323