Stockholders' Equity (Schedule of Reclassification Adjustments out of Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Nov. 23, 2014		Nov. 24, 2013		Nov. 23, 2014		Nov. 24, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	$ (1,269.7)		$ (1,200.5)		$ (2,552.3)		$ (2,408.6)
Selling, general and administrative	(190.4)		(174.7)		(350.4)		(340.1)
Interest, net	(33.7)		(32.9)		(145.0)		(65.7)
(Loss) earnings before income taxes	(54.6)		1.8		(98.3)		51.7
Tax benefit	23.8		4.2		48.2		(3.4)
Net (loss) earnings	(32.8)		19.8		470.4		90.0
Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (loss) earnings	(0.5)		(1.6)		(0.8)		(3.2)
Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Loss) earnings before income taxes	(1.4)		(2.9)		(42.8)		(6.3)
Tax benefit	0.6		1.1		16.1		2.1
Net (loss) earnings	(0.8)		(1.8)		(26.7)		(4.2)
Derivatives | Commodity | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	0	[1]	(0.5)	[1]	0	[1]	(0.7)	[1]
Derivatives | Equity | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	0	[2]	0	[2]	(0.9)	[2]	(0.7)	[2]
Derivatives | Interest rate related | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest, net	(1.4)		(2.6)		(41.9)		(5.2)
Derivatives | Foreign currency | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative	0	[2]	0.2	[2]	0	[2]	0.3	[2]
Benefit plan funding position | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Loss) earnings before income taxes	(0.8)		(2.6)		(1.6)		(5.2)
Tax benefit	0.3		1.0		0.8		2.0
Benefit plan funding position | Recognized net actuarial loss - pension/postretirement plans | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amount Reclassified from AOCI into Net Earnings, Benefit plan funding position	(0.7)	[3]	(2.3)	[3]	(1.3)		(4.6)
Benefit plan funding position | Recognized net actuarial loss - other plans | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amount Reclassified from AOCI into Net Earnings, Benefit plan funding position	$ (0.1)	[4]	$ (0.3)	[4]	$ (0.3)		$ (0.6)

[1] Primarily included in cost of sales. See Note 9 for additional details.

[2] Primarily included in cost of sales and selling, general and administrative expenses. See Note 9 for additional details.

[3] Included in the computation of net periodic benefit costs - pension and postretirement plans, which is a component of restaurant labor expenses and selling, general and administrative expenses. See Note 8 for additional details.

[4] Included in the computation of net periodic benefit costs - other plans, which is a component of selling, general and administrative expenses.