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Segment Information - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2021 USD ($) Segment	Jun. 30, 2019 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	3
Revenues			$ 12,980,213	$ 11,202,672	$ 12,112,153
Operating income (loss)			663,521	611,371	554,874
Non-US
Segment Reporting Information [Line Items]
Revenues			1,910,000	1,580,000	1,920,000
Property and equipment	$ 338,100		338,100	336,400
Canada
Segment Reporting Information [Line Items]
Revenues			$ 1,557,117	$ 1,252,365	$ 1,436,720
Percentage of foreign revenues			81.00%	79.00%	75.00%
Termination of the Peru Telecommunications Project
Segment Reporting Information [Line Items]
Related charge		$ 79,200			$ 79,200
Termination of the Peru Telecommunications Project | Revenues
Segment Reporting Information [Line Items]
Related charge					48,800
Termination of the Peru Telecommunications Project | Cost of Services
Segment Reporting Information [Line Items]
Related charge					30,400
Electric Power Infrastructure Solutions (1) | Operating Segments
Segment Reporting Information [Line Items]
Revenues			$ 7,624,240	$ 6,468,192	6,346,837
Operating income (loss)			$ 865,409	648,405	554,824
Electric Power Infrastructure Solutions (1) | Operating Segments | Latin America
Segment Reporting Information [Line Items]
Revenues					63,200
Operating income (loss)				$ (74,000)	$ (85,700)

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