Derivative Financial Instruments and Hedging Activities (Tables)

6 Months Ended

Oct. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments, Gain (Loss) [Table Text Block]

The following tables present the pre-tax impact that changes in the fair value of our derivative instruments and non-derivative hedging instruments had on AOCI and earnings:

		Three Months Ended
		October 31,
(Dollars in millions)	Classification	2018			2019
Currency derivatives designated as cash flow hedges:
Net gain (loss) recognized in AOCI	n/a	$	30		$	(2	)
Net gain (loss) reclassified from AOCI into earnings	Sales	—			6
Currency derivatives not designated as hedging instruments:
Net gain (loss) recognized in earnings	Sales	$	3		$	(1	)
Net gain (loss) recognized in earnings	Other income (expense), net	(4		)	1
Foreign currency-denominated debt designated as net investment hedge:
Net gain (loss) recognized in AOCI	n/a	$	19		$	(20	)
Total amounts presented in the accompanying condensed consolidated statements of operations for line items affected by the net gains (losses) shown above:
Sales		$	1,161		$	1,248
Other income (expense), net		5			3

		Six Months Ended
		October 31,
(Dollars in millions)	Classification	2018			2019
Currency derivatives designated as cash flow hedges:
Net gain (loss) recognized in AOCI	n/a	$	57		$	13
Net gain (loss) reclassified from AOCI into earnings	Sales	(2		)	10
Currency derivatives not designated as hedging instruments:
Net gain (loss) recognized in earnings	Sales	$	6		$	(1	)
Net gain (loss) recognized in earnings	Other income (expense), net	(1		)	2
Foreign currency-denominated debt designated as net investment hedge:
Net gain (loss) recognized in AOCI	n/a	$	47		$	3
Total amounts presented in the accompanying condensed consolidated statements of operations for line items affected by the net gains (losses) shown above:
Sales		$	2,148		$	2,226
Other income (expense), net		12			9

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The following table presents the fair values of our derivative instruments:

		April 30, 2019					October 31, 2019
(Dollars in millions)	Classification	Derivative Assets		Derivative Liabilities			Derivative Assets		Derivative Liabilities
Designated as cash flow hedges:
Currency derivatives	Other current assets	$	21	$	(2	)	$	28	$	(2	)
Currency derivatives	Other assets	22		(1		)	22		(2		)
Currency derivatives	Accrued expenses	—		(5		)	—		(6		)
Currency derivatives	Other liabilities	—		(1		)	—		(2		)
Not designated as hedges:
Currency derivatives	Other current assets	—		—			1		—

Offsetting Derivative Assets and Liabilities [Table Text Block]

The following table summarizes the gross and net amounts of our derivative contracts:

(Dollars in millions)	Gross Amounts of Recognized Assets (Liabilities)			Gross Amounts Offset in Balance Sheet			Net Amounts Presented in Balance Sheet			Gross Amounts Not Offset in Balance Sheet			Net Amounts
April 30, 2019
Derivative assets	$	43		$	(3	)	$	40		$	—		$	40
Derivative liabilities	(9		)	3			(6		)	—			(6		)
October 31, 2019
Derivative assets	51			(4		)	47			(1		)	46
Derivative liabilities	(12		)	4			(8		)	1			(7		)