Summarized Disaggregated Revenue From Contracts With Customers By Product Line (Detail)		3 Months Ended		9 Months Ended
		Jan. 26, 2019	Jan. 27, 2018	Jan. 26, 2019	Jan. 27, 2018
Segment Reporting Information [Line Items]
Sales by Product Line		100.00%	100.00%	100.00%	100.00%
Media
Segment Reporting Information [Line Items]
Sales by Product Line	[1]	63.00%	66.00%	67.00%	69.00%
Digital
Segment Reporting Information [Line Items]
Sales by Product Line	[2]	2.00%	2.00%	2.00%	3.00%
Other
Segment Reporting Information [Line Items]
Sales by Product Line	[3]	35.00%	32.00%	31.00%	28.00%

[1] (a) Includes tangible books, music, movies, rentals and newsstand.

[2] (b) Includes NOOK®, related accessories, eContent and warranties.

[3] (c) Includes Toys & Games, café products, gifts and miscellaneous other.