Segment Information - Accounts Receivable (Details) (Nokia Siemens Networks [Member])	3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Accounts Receivable [Member]	Dec. 31, 2012 Accounts Receivable [Member]
Concentration Risk [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	20.50%	20.30%	19.00%	22.80%
Concentration Risk, Percentage					25.90%	24.70%