Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	May 24, 2019	Feb. 22, 2019
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 8.5	$ 8.7
Property, plant and equipment, accumulated depreciation	1,016.0	1,009.3
Other intangible assets, accumulated amortization	$ 58.5	$ 55.8