Per Share Data (Narrative) (Details)	Jun. 30, 2013	Jun. 30, 2012	Oct. 22, 2012 Sprint Nextel [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially Dilutive Shares With Average Market Price Greater Than Exercise Price	34,000,000	12,000,000
Number of Stock that will be issued, Shares, Conversion Of Convertible Securities			590,476,190

Number of shares that will be issued as a result of the conversion of convertible debt.

No definition available.

Name:	s_NumberOfStockThatWillBeIssuedSharesConversionOfConvertibleSecurities
Namespace Prefix:	s_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant