Segment Reporting (Schedule Of Segment Reporting Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Segment Reporting Information [Line Items]
Net sales and operating revenues	$ 849.0		$ 913.3
Operating (loss) income	(18.5)		7.1
Interest income	0.4		0.5
Interest expense	(15.0)		(13.1)
Other loss	(0.3)
Loss from continuing operations before income taxes	(33.4)		(5.5)
Decrease in unallocated category operating loss	4.6
Settlement of dispute with non-merchandise vendor	5.3
U.S. RadioShack Company-Operated Stores [Member]
Segment Reporting Information [Line Items]
Net sales and operating revenues	770.1		833.6
Operating (loss) income	61.2		91.3
Other [Member]
Segment Reporting Information [Line Items]
Net sales and operating revenues	78.9		79.7
Operating (loss) income	8.3		8.4
Operating Segments Subtotal [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	69.5		99.7
Unallocated [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	$ (88.0)	[1],[2]	$ (92.6)	[1],[2]

[1] The unallocated category included in operating income relates to our overhead and corporate expenses that are not allocated to our operating segments for management reporting purposes. Unallocated costs include corporate departmental expenses such as labor and benefits, advertising, insurance, distribution, and information technology costs, plus certain unusual or infrequent gains or losses.

[2] The operating loss for our unallocated category decreased by $4.6 million for the three month period ended March 31, 2013. This decrease was primarily driven by the receipt of $5.3 million from a non-merchandise vendor as settlement of a dispute.