Supplemental Guarantor Financial Information (Condensed Consolidating Statements Of Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	$ 1,000.2	$ 1,031.8	$ 2,961.7	$ 2,991.1
Cost of products sold	640.3	589.9	1,847.0	1,662.7
Gross profit	359.9	441.9	1,114.7	1,328.4
Selling, general and administrative	384.6	411.4	1,120.4	1,146.3
Depreciation and amortization	17.6	19.2	54.5	55.8
Impairment of long-lived assets and goodwill	16.5	0.7	18.0	1.7
Total operating expenses	418.7	431.3	1,192.9	1,203.8
Operating (loss) income	(58.8)	10.6	(78.2)	124.6
Interest income	0.5	1.4	1.3	2.2
Interest expense	(13.2)	(12.6)	(39.2)	(33.2)
Other loss	(0.6)		(0.6)	(4.1)
(Loss) income from continuing operations before income taxes	(72.1)	(0.6)	(116.7)	89.5
Income tax (benefit) expense	(25.0)	(0.9)	(40.6)	34.3
(Loss) income from continuing operations	(47.1)	0.3	(76.1)	55.2
Discontinued operations, net of income taxes				5.1
Net (loss) income	(47.1)	0.3	(76.1)	60.3
Comprehensive (loss) income	(44.6)	(9.9)	(70.9)	53.5
RadioShack Corporation [Member]
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	943.1	993.6	2,854.9	2,949.1
Cost of products sold	662.4	646.0	1,967.7	1,870.4
Gross profit	280.7	347.6	887.2	1,078.7
Selling, general and administrative	340.3	371.3	997.9	1,031.7
Depreciation and amortization	15.3	17.2	47.8	50.7
Impairment of long-lived assets and goodwill	4.8	0.7	6.3	1.7
Total operating expenses	360.4	389.2	1,052.0	1,084.1
Operating (loss) income	(79.7)	(41.6)	(164.8)	(5.4)
Interest income	0.3	1.0	0.4	1.3
Interest expense	(17.2)	(16.1)	(50.9)	(44.2)
Other loss	(0.6)		(0.6)	(4.1)
(Loss) income from continuing operations before income taxes	(97.2)	(56.7)	(215.9)	(52.4)
Income tax (benefit) expense	(34.6)	(22.0)	(80.4)	(22.6)
Equity in earnings of subsidiaries, net of income taxes	15.6	35.0	59.5	90.1
(Loss) income from continuing operations	(47.0)	0.3	(76.0)	60.3
Net (loss) income	(47.0)	0.3	(76.0)	60.3
Comprehensive (loss) income	(44.6)	(9.9)	(70.9)	53.5
Guarantor Subsidiaries [Member]
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	918.2	996.2	2,740.2	2,693.0
Cost of products sold	849.9	910.7	2,546.0	2,473.0
Gross profit	68.3	85.5	194.2	220.0
Selling, general and administrative	33.1	30.3	90.4	74.9
Depreciation and amortization	1.7	1.6	5.1	3.0
Impairment of long-lived assets and goodwill	11.7		11.7
Total operating expenses	46.5	31.9	107.2	77.9
Operating (loss) income	21.8	53.6	87.0	142.1
Interest income	2.8	2.4	8.3	7.6
(Loss) income from continuing operations before income taxes	24.6	56.0	95.3	149.7
Income tax (benefit) expense	9.5	20.7	39.3	55.3
Equity in earnings of subsidiaries, net of income taxes	0.1	(0.5)	2.2	(10.6)
(Loss) income from continuing operations	15.2	34.8	58.2	83.8
Discontinued operations, net of income taxes				5.1
Net (loss) income	15.2	34.8	58.2	88.9
Comprehensive (loss) income	17.8	24.7	63.3	82.8
Non-Guarantor Subsidiaries [Member]
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	30.9	29.1	90.2	102.9
Cost of products sold	20.0	20.3	56.9	73.2
Gross profit	10.9	8.8	33.3	29.7
Selling, general and administrative	11.2	9.8	32.1	39.7
Depreciation and amortization	0.6	0.4	1.6	2.1
Total operating expenses	11.8	10.2	33.7	41.8
Operating (loss) income	(0.9)	(1.4)	(0.4)	(12.1)
Interest income	1.5	1.5	4.4	4.3
Interest expense	(0.1)		(0.1)
(Loss) income from continuing operations before income taxes	0.5	0.1	3.9	(7.8)
Income tax (benefit) expense	0.1	0.4	0.5	1.6
(Loss) income from continuing operations	0.4	(0.3)	3.4	(9.4)
Net (loss) income	0.4	(0.3)	3.4	(9.4)
Comprehensive (loss) income	2.8	(10.5)	8.2	(15.7)
Eliminations [Member]
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	(892.0)	(987.1)	(2,723.6)	(2,753.9)
Cost of products sold	(892.0)	(987.1)	(2,723.6)	(2,753.9)
Interest income	(4.1)	(3.5)	(11.8)	(11.0)
Interest expense	4.1	3.5	11.8	11.0
Equity in earnings of subsidiaries, net of income taxes	(15.7)	(34.5)	(61.7)	(79.5)
(Loss) income from continuing operations	(15.7)	(34.5)	(61.7)	(79.5)
Net (loss) income	(15.7)	(34.5)	(61.7)	(79.5)
Comprehensive (loss) income	$ (20.6)	$ (14.2)	$ (71.5)	$ (67.1)