Commitments and Contingencies (Details 2) (USD $) In Billions, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended				0 Months Ended
	Mar. 31, 2011 Breach of fiduciary duties	Dec. 31, 2011 Breach of fiduciary duties	Sep. 30, 2013 Breach of fiduciary duties	Feb. 22, 2012 E-Contact Technologies, LLC item	Jul. 31, 2009 Technology Development and Licensing, LLC item	Aug. 06, 2013 Harbinger Capital Partners, et al. Minimum	Oct. 01, 2013 Caltech Subsequent event item
Commitment and Contingencies
Number of indirect wholly-owned subsidiaries against which lawsuit was filed				2			2
Alleged damages						$ 4.0
Number of reexamination petitions pending before the United States Patents and Trademark Office					2
Stock option grants attempted (in shares)	1,500,000
Stock option grants (in shares)		800,000
Stock options outstanding (in shares)			800,000