Earnings Per Share (Narrative) (Details) (Telesat Holdings Inc [Member])	3 Months Ended
Mar. 31, 2014
Telesat Holdings Inc [Member]
Percentage of economic interest as result of dilution upon exercise of stock options	62.00%

Percentage of economic interest as result of dilution upon exercise of stock options.

No definition available.

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Namespace Prefix:	lorl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration