Revenues - Narrative (Details)	3 Months Ended
Mar. 31, 2020 customer country	Mar. 31, 2019
Concentration Risk [Line Items]
Number of customers \| customer	400
Number of countries in which customers are located (more than) \| country	40
Length of contract terms	We typically sell to customers under master service agreements, with primarily one-year terms, or by purchase orders.
Duration of customer relationship	20 years
10 Largest Customers \| Customer Concentration Risk \| Revenue from Contract with Customer
Concentration Risk [Line Items]
Concentration risk percentage	43.00%	48.00%
Shaw Industries Group Inc \| Customer Concentration Risk \| Revenue from Contract with Customer
Concentration Risk [Line Items]
Concentration risk percentage	17.00%	22.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service.

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