Aggregate dividends declared during the period for each share of common stock outstanding.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Adjustment to retained earnings for the increase in carrying amount of redeemable preferred stock that is classified as temporary equity.

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Shareholders' equity - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	May 25, 2017	Apr. 29, 2017	Apr. 30, 2016
Dividends Payable [Line Items]
Dividends, common stock		$ 21.3	$ 20.4
Dividends declared per share (usd per share)		$ 0.31	$ 0.26
Dividends on redeemable convertible preferred shares		$ 8.2
Subsequent Event
Dividends Payable [Line Items]
Dividends declared date	May 25, 2017
Dividends declared per share (usd per share)	$ 0.31
Dividends payable date	Aug. 30, 2017
Dividends payable, date of record	Jul. 28, 2017
Series A Redeemable Convertible Preferred Stock
Dividends Payable [Line Items]
Dividends on preferred shares		7.8
Dividends on redeemable convertible preferred shares		$ 0.4