SUMMARY OF SEGMENT DATA (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016	Jan. 28, 2017
Merchandise sales
Merchandise sales		$ 3,498	$ 4,648	$ 6,927	$ 9,050
Services and other
Services and other	[1],[2]	867	1,015	1,739	2,007
Total revenues		4,365	5,663	8,666	11,057
COSTS AND EXPENSES
Cost of sales, buying and occupancy - merchandise sales	[3]	2,902	3,809	5,785	7,431
Cost of sales and occupancy - services and other	[1]	492	594	980	1,189
Total cost of sales, buying and occupancy		3,394	4,403	6,765	8,620
Selling and administrative		1,369	1,484	2,636	2,987
Depreciation and amortization		83	92	170	187
Impairment charges		5	7	20	15
Gain on sales of assets		(380)	(54)	(1,121)	(115)
Total costs and expenses		4,471	5,932	8,470	11,694
Operating income (loss)		(106)	(269)	196	(637)
Total assets		8,351	10,614	8,351	10,614	$ 9,362
Capital expenditures		19	35	41	75
Hardlines
Merchandise sales
Merchandise sales		1,990	2,535	3,827	4,803
Apparel and Soft Home
Merchandise sales
Merchandise sales		1,009	1,330	2,042	2,630
Food and Drug
Merchandise sales
Merchandise sales		499	783	1,058	1,617
Services
Services and other
Services and other		483	563	956	1,082
Other
Services and other
Services and other		384	452	783	925
Kmart
Merchandise sales
Merchandise sales		1,461	2,206	2,939	4,328
Services and other
Services and other		14	15	29	32
Total revenues		1,475	2,221	2,968	4,360
COSTS AND EXPENSES
Cost of sales, buying and occupancy - merchandise sales		1,193	1,756	2,420	3,486
Cost of sales and occupancy - services and other		2	4	5	9
Total cost of sales, buying and occupancy		1,195	1,760	2,425	3,495
Selling and administrative		323	498	715	1,042
Depreciation and amortization		14	15	27	34
Impairment charges		3	1	8	4
Gain on sales of assets		(79)	(44)	(676)	(90)
Total costs and expenses		1,456	2,230	2,499	4,485
Operating income (loss)		19	(9)	469	(125)
Total assets		2,011	2,719	2,011	2,719
Capital expenditures		3	12	9	23
Kmart | Hardlines
Merchandise sales
Merchandise sales		438	666	820	1,226
Kmart | Apparel and Soft Home
Merchandise sales
Merchandise sales		526	759	1,064	1,488
Kmart | Food and Drug
Merchandise sales
Merchandise sales		497	781	1,055	1,614
Kmart | Services
Services and other
Services and other		2	2	3	5
Kmart | Other
Services and other
Services and other		12	13	26	27
Sears Domestic
Merchandise sales
Merchandise sales		2,037	2,442	3,988	4,722
Services and other
Services and other		853	1,000	1,710	1,975
Total revenues		2,890	3,442	5,698	6,697
COSTS AND EXPENSES
Cost of sales, buying and occupancy - merchandise sales		1,709	2,053	3,365	3,945
Cost of sales and occupancy - services and other		490	590	975	1,180
Total cost of sales, buying and occupancy		2,199	2,643	4,340	5,125
Selling and administrative		1,046	986	1,921	1,945
Depreciation and amortization		69	77	143	153
Impairment charges		2	6	12	11
Gain on sales of assets		(301)	(10)	(445)	(25)
Total costs and expenses		3,015	3,702	5,971	7,209
Operating income (loss)		(125)	(260)	(273)	(512)
Total assets		6,340	7,895	6,340	7,895
Capital expenditures		16	23	32	52
Sears Domestic | Hardlines
Merchandise sales
Merchandise sales		1,552	1,869	3,007	3,577
Sears Domestic | Apparel and Soft Home
Merchandise sales
Merchandise sales		483	571	978	1,142
Sears Domestic | Food and Drug
Merchandise sales
Merchandise sales		2	2	3	3
Sears Domestic | Services
Services and other
Services and other		481	561	953	1,077
Sears Domestic | Other
Services and other
Services and other		$ 372	$ 439	$ 757	$ 898

[1] Includes merchandise sales to Sears Hometown and Outlet Stores, Inc. ("SHO") of $257 million and $283 million for the 13 weeks ended July 29, 2017 and July 30, 2016, respectively, and $511 million and $576 million for the 26 weeks ended July 29, 2017 and July 30, 2016, respectively. Pursuant to the terms of the separation, merchandise is sold to SHO at cost.

[2] Includes revenue from Lands' End, Inc. ("Lands' End") for retail services and rent for Lands' End Shops at owned Sears locations, participation in the Shop Your Way® program and corporate shared services of $12 million and $12 million for the 13 weeks ended July 29, 2017 and July 30, 2016, respectively, and $24 million and $23 million for the 26 weeks ended July 29, 2017 and July 30, 2016, respectively.

[3] Includes rent expense (consisting of straight-line rent expense offset by amortization of a deferred gain on sale-leaseback) of $19 million and $21 million for the 13 weeks ended July 29, 2017 and July 30, 2016, respectively, and $38 million and $42 million for the 26 weeks ended July 29, 2017 and July 30, 2016, respectively, pursuant to the master lease with Seritage Growth Properties ("Seritage"). Also includes installment expenses of $12 million and $17 million for the 13 weeks ended July 29, 2017 and July 30, 2016, respectively, and $24 million and $34 million for the 26 weeks ended July 29, 2017 and July 30, 2016, respectively.