Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Jun. 30, 2013	Feb. 14, 2014 Voting Common Stock [Member]	Feb. 14, 2014 Nonvoting Common Stock [Member]
Entity Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Trading Symbol	lorl
Entity Registrant Name	LORAL SPACE & COMMUNICATIONS INC.
Entity Central Index Key	0001006269
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	No
Entity Public Float		$ 791,183,944
Entity Common Stock, Shares Outstanding			21,414,212	9,505,673