Equity Plans Equity Plances - Options Outstanding (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 01, 2011 decimal
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding Options - Number of Shares (in shares)	99.3
Outstanding Options - Weighted Average Remaining Contractual Life (in years)	2.6
Outstanding Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 11.06
Excercisable Options -Number of Shares (in shares)	61.8
Excercisable Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 13.53
$1.56 - $6.86 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding Options - Number of Shares (in shares)	19.5
Outstanding Options - Weighted Average Remaining Contractual Life (in years)	3.1
Outstanding Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 3.72
Excercisable Options -Number of Shares (in shares)	8.2
Excercisable Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 4.06
$7.01 - $9.97 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding Options - Number of Shares (in shares)	28.6
Outstanding Options - Weighted Average Remaining Contractual Life (in years)	4.7
Outstanding Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 8.31
Excercisable Options -Number of Shares (in shares)	3.8
Excercisable Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 7.82
$10.00 to $12.93 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding Options - Number of Shares (in shares)	23.7
Outstanding Options - Weighted Average Remaining Contractual Life (in years)	1.9
Outstanding Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 12.24
Excercisable Options -Number of Shares (in shares)	22.3
Excercisable Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 12.36
$13.00 to $19.61 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding Options - Number of Shares (in shares)	14.7
Outstanding Options - Weighted Average Remaining Contractual Life (in years)	1.0
Outstanding Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 14.86
Excercisable Options -Number of Shares (in shares)	14.7
Excercisable Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 14.86
$20.98 to $39.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, End of Period [Abstract]
Outstanding Options - Number of Shares (in shares)	12.8
Outstanding Options - Weighted Average Remaining Contractual Life (in years)	0.1
Outstanding Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 21.81
Excercisable Options -Number of Shares (in shares)	12.8
Excercisable Options - Weighted Average Exercise Price Per Share (in dollars per share)	$ 21.81