Stockholders' Equity (Tables)

3 Months Ended

Jul. 31, 2016

Stockholders' Equity Attributable to Parent [Abstract]

Schedule of Stockholders Equity [Table Text Block]

The following table summarizes the changes in stockholders’ equity during the three months ended July 31, 2016:

(Dollars in millions)	Class A Common Stock		Class B Common Stock		Additional Paid-in Capital			Retained Earnings			AOCI			Treasury Stock			Total
Balance at April 30, 2016	$	13	$	21	$	114		$	4,065		$	(350	)	$	(2,301	)	$	1,562
Cumulative effect of change in accounting principle (Note 1)								10									10
Net income								144									144
Net other comprehensive income (loss)											(52		)				(52		)
Cash dividends								(134		)							(134		)
Acquisition of treasury stock														(201		)	(201		)
Stock-based compensation expense					4												4
Stock issued under compensation plans														7			7
Loss on issuance of treasury stock issued under compensation plans					(10		)										(10		)
Stock split	12		22		(34		)										—
Balance at July 31, 2016	$	25	$	43	74			4,085			(402		)	(2,495		)	1,330

Dividends Declared [Table Text Block]

The following table summarizes the cash dividends declared per share on our Class A and Class B common stock during the three months ended July 31, 2016:

Declaration Date	Record Date	Payable Date	Amount per Share
May 26, 2016	June 6, 2016	July 1, 2016	$0.17
July 28, 2016	September 1, 2016	October 3, 2016	$0.17

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table summarizes the changes in each component of AOCI, net of tax, during the three months ended July 31, 2016:

(Dollars in millions)	Currency Translation Adjustments			Cash Flow Hedge Adjustments		Postretirement Benefits Adjustments			Total AOCI
Balance at April 30, 2016	$	(131	)	$	11	$	(230	)	$	(350	)
Net other comprehensive income (loss)	(67		)	12		3			(52		)
Balance at July 31, 2016	$	(198	)	$	23	$	(227	)	$	(402	)