Dispositions	12 Months Ended
Dec. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Dispositions	DispositionsTelematics BusinessesAs part of the Company's plans to exit the telematics business, the Company sold its investment in Masternaut to Michelin Group during the second quarter of 2019. The Company impaired its investments in Masternaut by an additional $15.7 million during 2019, resulting in no gain or loss when the investment was sold. The Company has recorded cumulative impairment losses associated with its former investment in Masternaut of $136.3 million.

The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-URI http://asc.fasb.org/topic&trid=2155823

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-URI http://asc.fasb.org/subtopic&trid=2122178

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