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Debt (Narrative) (Details) € in Millions, $ in Millions	1 Months Ended			3 Months Ended		9 Months Ended
Debt (Narrative) (Details) € in Millions, $ in Millions	Mar. 20, 2019 EUR (€)	Apr. 30, 2018 USD ($)	Oct. 31, 2017 USD ($)	Feb. 24, 2019 USD ($)	Feb. 25, 2018 USD ($)	Feb. 24, 2019 USD ($)	Feb. 25, 2018 USD ($)
Debt Instrument [Line Items]
Long-term debt, carrying value				$ 13,049.8		$ 13,049.8
Repayment of long-term debt						1,153.4	$ 600.0
Issuance of long-term debt						$ 0.0	500.0
Total fixed-rate notes issued April 2018 [Member]
Debt Instrument [Line Items]
Issuance of long-term debt		$ 4,800.0
4.2% notes due April 17, 2028 [Member]
Debt Instrument [Line Items]
Fixed interest rate percentage				4.20%		4.20%
Maturity date		Apr. 17, 2028
Issuance of long-term debt		$ 1,400.0
3.7% notes due October 17, 2023 [Member]
Debt Instrument [Line Items]
Fixed interest rate percentage				3.70%		3.70%
Maturity date		Oct. 17, 2023
Issuance of long-term debt		$ 850.0
4.0% notes due April 17, 2025 [Member]
Debt Instrument [Line Items]
Fixed interest rate percentage				4.00%		4.00%
Maturity date		Apr. 17, 2025
Issuance of long-term debt		$ 800.0
4.7% notes due April 17, 2048 [Member]
Debt Instrument [Line Items]
Fixed interest rate percentage				4.70%		4.70%
Maturity date		Apr. 17, 2048
Issuance of long-term debt		$ 650.0
3.2% notes due April 16, 2021 [Member]
Debt Instrument [Line Items]
Fixed interest rate percentage				3.20%		3.20%
Maturity date		Apr. 16, 2021
Issuance of long-term debt		$ 600.0
4.55% notes due April 17, 2038 [Member]
Debt Instrument [Line Items]
Fixed interest rate percentage				4.55%		4.55%
Maturity date		Apr. 17, 2038
Issuance of long-term debt		$ 500.0
Total floating-rate notes issued April 2018 [Member]
Debt Instrument [Line Items]
Issuance of long-term debt		$ 1,250.0
Floating-rate notes due April 16, 2021 [Member]
Debt Instrument [Line Items]
Maturity date		Apr. 16, 2021
Issuance of long-term debt		$ 850.0
Floating-rate notes due October 17, 2023 [Member]
Debt Instrument [Line Items]
Maturity date		Oct. 17, 2023
Issuance of long-term debt		$ 400.0
Medium Term Notes [Member]
Debt Instrument [Line Items]
Repayment of long-term debt					$ 113.8
Face amount of debt repurchased					$ 100.0		$ 100.0
Fixed interest rate percentage					6.39%		6.39%
Maturity date					May 28, 2023
Premium payment recorded as interest expense					$ 13.8
2.6% Notes Due October 2022 [Member]
Debt Instrument [Line Items]
Fixed interest rate percentage			2.60%
Maturity date			Oct. 12, 2022
Issuance of long-term debt			$ 500.0
1.4% Notes Due October 2017 [Member]
Debt Instrument [Line Items]
Repayment of long-term debt			$ 500.0
Fixed interest rate percentage			1.40%
Long-term Debt Agreements Containing Restrictive Covenants [Member]
Debt Instrument [Line Items]
Covenant compliancee						As of quarter end, we were in compliance with all of these covenants.
5.65% Fixed Rate Note [Member]
Debt Instrument [Line Items]
Repayment of long-term debt				$ 1,150.0
0.0% Fixed Rate Notes Due Jan. 15 2020 [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Issuance of long-term debt \| €	€ 300.0
Fair Value Inputs Level 2 [Member]
Debt Instrument [Line Items]
Long-term debt, fair value				$ 12,960.8		$ 12,960.8