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Subsequent Event	12 Months Ended
Subsequent Event	Dec. 31, 2018
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On February 5, 2019, the Company sold its L3 Mobile Vision, Inc. (Mobile Vision) business, subject to working capital adjustments and certain indemnification liabilities. Mobile Vision had sales of $23 million and operating loss of $9 million for the year ended December 31, 2018.