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, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	$ 805.4	$ 898.0	$ 2,498.9	$ 2,659.9
Cost of products sold	562.7	557.2	1,605.1	1,608.8
Gross profit	242.7	340.8	893.8	1,051.1
Selling, general and administrative	343.3	354.0	1,018.1	1,036.3
Depreciation and amortization	15.0	16.0	47.0	49.5
Impairment of long-lived assets and goodwill			6.6	18.0
Total operating expenses	360.7	374.8	1,071.7	1,092.1
Operating loss	(118.0)	(34.0)	(177.9)	(41.0)
Interest income	0.3	0.5	1.0	1.3
Interest expense	(11.5)	(13.2)	(40.6)	(39.2)
Other (loss) income		(0.6)	(0.3)	(0.6)
Loss from continuing operations before income taxes	(129.2)	(47.3)	(217.8)	(79.5)
Income tax (benefit) expense	(16.8)	(15.9)	(17.2)	(27.2)
Loss from continuing operations	(112.4)	(31.4)	(200.6)	(52.3)
Discontinued operations, net of income taxes		(15.7)	(8.2)	(23.8)
Net loss	(112.4)	(47.1)	(208.8)	(76.1)
Comprehensive (loss) income	(113.2)	(44.6)	(208.9)	(70.9)
RadioShack Corporation [Member]
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	773.8	943.1	2,470.1	2,854.9
Cost of products sold	553.8	662.4	1,646.5	1,967.7
Gross profit	220.0	280.7	823.6	887.2
Selling, general and administrative	328.4	340.3	977.7	997.9
Depreciation and amortization	14.1	15.3	44.5	47.8
Total operating expenses	344.9	360.4	1,028.8	1,052.0
Operating loss	(124.9)	(79.7)	(205.2)	(164.8)
Interest income	0.2	0.3	0.5	0.4
Interest expense	(15.6)	(17.2)	(52.3)	(50.9)
Other (loss) income		(0.6)	(0.3)	(0.6)
Loss from continuing operations before income taxes	(140.3)	(97.2)	(257.3)	(215.9)
Income tax (benefit) expense	(19.6)	(34.6)	(25.9)	(80.4)
Equity in earnings of subsidiaries, net of income taxes	8.3	15.6	22.6	59.5
Loss from continuing operations	(112.4)	(47.0)	(208.8)	(76.0)
Net loss	(112.4)	(47.0)	(208.8)	(76.0)
Comprehensive (loss) income	(113.2)	(44.6)	(208.9)	(70.9)
Guarantor Subsidiaries [Member]
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	528.4	816.0	1,879.1	2,438.4
Cost of products sold	516.0	766.8	1,841.7	2,307.8
Gross profit	12.4	49.2	37.4	130.6
Selling, general and administrative	1.3	2.5	1.8	6.3
Depreciation and amortization		0.1		0.1
Total operating expenses	1.3	2.6	1.8	6.4
Operating loss	11.1	46.6	35.6	124.2
Interest income	2.9	2.8	8.3	8.3
Loss from continuing operations before income taxes	14.0	49.4	43.9	132.5
Income tax (benefit) expense	2.3	18.6	8.9	52.7
Equity in earnings of subsidiaries, net of income taxes	(3.4)	0.1	(5.2)	2.2
Loss from continuing operations	8.3	30.9	29.8	82.0
Discontinued operations, net of income taxes		(15.7)	(8.2)	(23.8)
Net loss	8.3	15.2	21.6	58.2
Comprehensive (loss) income	7.4	17.8	21.5	63.3
Non-Guarantor Subsidiaries [Member]
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	30.5	30.9	96.2	90.2
Cost of products sold	20.2	20.0	63.4	56.9
Gross profit	10.3	10.9	32.8	33.3
Selling, general and administrative	13.6	11.2	38.6	32.1
Depreciation and amortization	0.9	0.6	2.5	1.6
Total operating expenses	14.5	11.8	41.1	33.7
Operating loss	(4.2)	(0.9)	(8.3)	(0.4)
Interest income	1.5	1.5	4.4	4.4
Interest expense	(0.2)	(0.1)	(0.5)	(0.1)
Loss from continuing operations before income taxes	(2.9)	0.5	(4.4)	3.9
Income tax (benefit) expense	0.5	0.1	(0.2)	0.5
Loss from continuing operations	(3.4)	0.4	(4.2)	3.4
Net loss	(3.4)	0.4	(4.2)	3.4
Comprehensive (loss) income	(4.1)	2.8	(4.2)	8.2
Eliminations [Member]
Supplemental Guarantor Financial Information [Line Items]
Net sales and operating revenues	(527.3)	(892.0)	(1,946.5)	(2,723.6)
Cost of products sold	(527.3)	(892.0)	(1,946.5)	(2,723.6)
Interest income	(4.3)	(4.1)	(12.2)	(11.8)
Interest expense	4.3	4.1	12.2	11.8
Equity in earnings of subsidiaries, net of income taxes	(4.9)	(15.7)	(17.4)	(61.7)
Loss from continuing operations	(4.9)	(15.7)	(17.4)	(61.7)
Net loss	(4.9)	(15.7)	(17.4)	(61.7)
Comprehensive (loss) income	(3.3)	(20.6)	(17.3)	(71.5)
Continuing Operations [Member]
Supplemental Guarantor Financial Information [Line Items]
Impairment of long-lived assets and goodwill	2.4	4.8	6.6	6.3
Continuing Operations [Member] | RadioShack Corporation [Member]
Supplemental Guarantor Financial Information [Line Items]
Impairment of long-lived assets and goodwill	$ 2.4	$ 4.8	$ 6.6	$ 6.3