Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Nov. 27, 2015	Feb. 27, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 13.2	$ 14.6
Property, plant and equipment, accumulated depreciation	942.9	1,055.9
Other intangible assets, accumulated amortization	$ 41.9	$ 41.1