Note 12 - Supplemental Cash Flow Information (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Feb. 25, 2017	Feb. 27, 2016	Feb. 28, 2015
Income Taxes Paid	$ 364.4	$ 442.4	$ 554.4
Interest Paid	81.4	81.5	48.2
Capital Expenditures Incurred but Not yet Paid	$ 59.0	$ 51.7	$ 57.8