Schedule I - Condensed Financial Information of Registrant (Parenthetical) (Details) - $ / shares	Jan. 25, 2020	Jan. 26, 2019
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized	500,000,000	500,000,000
Common stock, shares issued	64,106,061	63,609,684
Common stock, outstanding shares	64,106,061	63,609,684
Parent company
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized	500,000,000	500,000,000
Common stock, shares issued	64,106,061	63,609,684
Common stock, outstanding shares	64,106,061	63,609,684