Shareholders' Equity (Dividends Declared) (Details) (Dividend Paid, USD $) In Millions, except Per Share data, unless otherwise specified	Nov. 26, 2014	Aug. 29, 2014	May 27, 2014	Mar. 14, 2014	Nov. 26, 2013	Aug. 29, 2013	Jun. 03, 2013	Mar. 01, 2013	Nov. 30, 2012	Sep. 07, 2012
Dividends Payable [Line Items]
Distribution Per Share	$ 0.62	$ 0.57	$ 0.57	$ 0.57	$ 0.55	$ 0.50	$ 0.50	$ 0.50	$ 0.20	$ 0.20
Aggregate Payment Amount	$ 46.0	$ 41.4	$ 41.5	$ 41.1	$ 39.6	$ 36.1	$ 35.8	$ 35.7	$ 12.3	$ 12.3
Qualified
Dividends Payable [Line Items]
Distribution Per Share	$ 0.0487594	$ 0.0448272	$ 0.0448272	$ 0.0448272	$ 0.1706163	$ 0.1551057	$ 0.1551057	$ 0.1551057
Non-Qualified
Dividends Payable [Line Items]
Distribution Per Share	$ 0.4518556	$ 0.4154156	$ 0.4154156	$ 0.4154156	$ 0.3793837	$ 0.3448943	$ 0.3448943	$ 0.3448943
Nondividend Distributions
Dividends Payable [Line Items]
Distribution Per Share	$ 0.1097572	$ 0.1097572	$ 0.1097572	$ 0.1097572