Equity and Comprehensive Income Equity and Comprehensive Income - Additional Information - Stock Repurchase Programs (Details) (USD $)	9 Months Ended
May 10, 2015	Apr. 17, 2015
Equity [Abstract]
Stock repurchase program, authorized amount		$ 4,000,000,000
Stock repurchase program expiration date	Apr. 17, 2019
Previously authorized but unused share repurchase amounts revoked		$ 2,528,000,000

Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

No definition available.

Name:	us-gaap_StockRepurchaseProgramExpirationDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration