Business Segment Information (Details 2) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	$ 1,797.2	$ 1,972.6	$ 2,299.1	$ 2,047.1	$ 1,762.0	$ 1,801.9	$ 2,087.9	$ 1,928.5	$ 8,116.0	$ 7,580.3	$ 7,321.1
Long-lived tangible assets	5,267.3				4,789.7				5,267.3	4,789.7	3,932.8
Geographical Components [Member] | U.S. [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									7,894.8	7,325.4	6,797.3
Long-lived tangible assets	1,127.7				1,124.5				1,127.7	1,124.5
Geographical Components [Member] | Non-U.S. [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									221.2	254.9	$ 523.8
Long-lived tangible assets	$ 4,139.6				$ 3,665.2				$ 4,139.6	$ 3,665.2