Segment Reporting (Consolidated Net Sales And Operating Revenues Information By Product) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Consolidated net sales and operating revenue	$ 1,296.1	[1]	$ 1,000.2	[1]	$ 953.2	[1]	$ 1,008.3	[1]	$ 1,386.9	$ 1,031.8	$ 941.9	$ 1,017.4	$ 4,257.8	$ 4,378.0	$ 4,265.8
Percentage of products and services revenue on total revenue													100.00%	100.00%	100.00%
Mobility [Member]
Segment Reporting Information [Line Items]
Consolidated net sales and operating revenue													2,260.2	2,251.2	1,884.9
Percentage of products and services revenue on total revenue													53.10%	51.40%	44.20%
Signature [Member]
Segment Reporting Information [Line Items]
Consolidated net sales and operating revenue													1,293.3	1,265.8	1,314.9
Percentage of products and services revenue on total revenue													30.40%	28.90%	30.80%
Consumer Electronics [Member]
Segment Reporting Information [Line Items]
Consolidated net sales and operating revenue													661.9	831.1	1,030.7
Percentage of products and services revenue on total revenue													15.50%	19.00%	24.20%
Other Sales [Member]
Segment Reporting Information [Line Items]
Consolidated net sales and operating revenue													$ 42.4	$ 29.9	$ 35.3
Percentage of products and services revenue on total revenue													1.00%	0.70%	0.80%

[1] The third quarter includes $3.0 million of franchise fee revenue related to the opening of our first franchised stores in Southeast Asia.