Stockholders' Equity (Schedule of Reclassification Adjustments out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Feb. 26, 2017	Feb. 28, 2016	Feb. 26, 2017	Feb. 28, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Less interest, net		$ (9.3)	$ (83.1)	$ (28.7)	$ (162.8)
Earnings before income taxes		220.2	138.1	478.6	274.3
Tax benefit (expense)		(53.9)	(29.9)	(121.5)	(55.0)
Net earnings		165.6	105.8	355.3	235.4
Derivatives | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Earnings before income taxes		0.0	0.0	(1.4)	(35.3)
Tax benefit (expense)		0.0	0.0	0.0	14.3
Net earnings		0.0	0.0	(1.4)	(21.0)
Derivatives | Equity contracts | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
General and administrative expenses	[1]	0.0	0.0	(1.4)	2.1
Derivatives | Interest rate contracts | Amount Reclassified from AOCI into Net Earnings
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Less interest, net	[2]	0.0	0.0	0.0	(37.4)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent | Recognized net actuarial loss - pension/postretirement plans | Amount Reclassified from AOCI into Net Earnings
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Reclassification adjustment from AOCI pension and other postretirement benefit plans, before tax	[3]	(0.8)	(0.7)	(2.4)	(2.1)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent | Recognized net actuarial gain - other plans | Amount Reclassified from AOCI into Net Earnings
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Reclassification adjustment from AOCI pension and other postretirement benefit plans, before tax	[4]	0.6	0.8	1.7	2.5
Benefit plan funding position | Amount Reclassified from AOCI into Net Earnings
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Reclassification adjustment from AOCI pension and other postretirement benefit plans, before tax		(0.2)	0.1	(0.7)	0.4
Pension and other postretirement benefit plans, tax benefit (expense)		0.1	0.0	0.3	(0.1)
Net earnings		$ (0.1)	$ 0.1	$ (0.4)	$ 0.3

[1] Primarily included in restaurant labor costs and general and administrative expenses. See Note 11 for additional details.

[2] Included in interest, net, on our consolidated statements of earnings. Reclassifications for the nine months ended February 28, 2016 primarily related to the acceleration of hedge loss amortization resulting from the pay down of debt.

[3] Included in the computation of net periodic benefit costs - pension and postretirement plans, which is a component of restaurant labor expenses and general and administrative expenses. See Note 9 for additional details.

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