Spectrum Hosting Arrangement (Narrative) (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended	6 Months Ended
	Jul. 06, 2011	Jun. 30, 2011	Jun. 30, 2011 years gHZ mHZ market
Spectrum Hosting Arrangement [Abstract]
MHz licenses utilized in iDEN network			800
Gigahertz (GHz) licenses utilized in the code division multiple access network			1.9
Term of Arrangement			15
Expected period for staggered activation of 4G LTE markets - low range			2
Expected period for staggered activation of 4G LTE markets - high range			3
Estimated period of Sprint's initial performance obligation			8
Cash received for Spectrum Hosting Agreement	$ 200	$ 90