Goodwill and Intangible Assets - Assumptions for Our Annual Impairment Assessments of Goodwill (Details)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of information for cash-generating units [line items]
Annual revenue growth rate (percentage)	2.00%
Term used to extrapolate cash flow projections	5 years
Capital equipment CGU
Disclosure of information for cash-generating units [line items]
Annual revenue growth rate (percentage)	13.00%	13.00%	4.00%
Term used to extrapolate cash flow projections	5 years	5 years	5 years
Discount rate (percentage)	12.00%	13.00%	13.00%
A & D CGU
Disclosure of information for cash-generating units [line items]
Annual revenue growth rate (percentage)	8.00%
Term used to extrapolate cash flow projections	5 years	5 years	5 years
Discount rate (percentage)	11.00%	10.00%	11.00%
Atrenne CGU
Disclosure of information for cash-generating units [line items]
Annual revenue growth rate (percentage)	9.00%	4.00%	12.00%
Term used to extrapolate cash flow projections	5 years	5 years	4 years
Discount rate (percentage)	10.00%	10.00%	13.00%

Growth Rate Used To Extrapolate Cash Flow Projections, Term

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- Definition

The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Cash-generating units [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Cash-generating units [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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