XML 31 R80.htm IDEA: XBRL DOCUMENT

Pension And Postretirement Benefits (Schedule Of Assumed Health Care Cost Trend Rates) (Details)	12 Months Ended
	Jul. 31, 2011	Aug. 01, 2010
Pension And Postretirement Benefits
Health care cost trend rate assumed for next year	8.25%	8.25%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)	4.50%	4.50%
Year that the rate reaches the ultimate trend rate	2019	2018

The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ References+ Details