Derivative Financial Instruments and Hedging Activities (Tables)

3 Months Ended

Jul. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

The following table presents 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
		July 31,
(Dollars in millions)	Classification	2018			2019
Currency derivatives designated as cash flow hedges:
Net gain (loss) recognized in AOCI	n/a	$	27		$	15
Net gain (loss) reclassified from AOCI into earnings	Sales	(2		)	4
Currency derivatives not designated as hedging instruments:
Net gain (loss) recognized in earnings	Sales	$	3		$	—
Net gain (loss) recognized in earnings	Other income (expense), net	3			1
Foreign currency-denominated debt designated as net investment hedge:
Net gain (loss) recognized in AOCI	n/a	$	28		$	23
Total amounts presented in the accompanying consolidated statements of operations for line items affected by the net gains (losses) shown above:
Sales		$	987		$	978
Other income (expense), net		7			6

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					July 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	)	$	30	$	(2	)
Currency derivatives	Other assets	22		(1		)	27		—
Currency derivatives	Accrued expenses	—		(5		)	—		(6		)
Currency derivatives	Other liabilities	—		(1		)	—		(2		)

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		)
July 31, 2019
Derivative assets	57			(2		)	55			—		55
Derivative liabilities	(10		)	2			(8		)	—		(8		)