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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

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

+ References

No definition available.

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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

+ References

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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

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Goodwill and Other Intangible Assets - Narrative (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2020 tradename	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) business	Dec. 31, 2019 USD ($) business	Dec. 31, 2018 USD ($)
Goodwill [Line Items]
Number of businesses acquired \| business			4	2
Goodwill impairment		$ 0	$ 0	$ 0	$ 0
Amortization of intangible assets			395,800,000	124,300,000	125,800,000
Anticipated amortization of intangible assets in 2021			340,000,000
Anticipated amortization of intangible assets in 2022			340,000,000
Anticipated amortization of intangible assets in 2023			320,000,000
Anticipated amortization of intangible assets in 2024			320,000,000
Anticipated amortization of intangible assets in 2025			240,000,000
Impairment of other intangible assets			19,900,000	0	0
Number of trade names \| tradename	2
Tradenames
Goodwill [Line Items]
Impairment of indefinite-lived intangible assets			0	0	$ 0
Energy
Goodwill [Line Items]
Accumulated impairment loss of goodwill			563,900,000	$ 563,900,000
Industrial Technologies and Services
Goodwill [Line Items]
Accumulated impairment loss of goodwill			220,600,000
High Pressure Solutions
Goodwill [Line Items]
Accumulated impairment loss of goodwill			$ 343,300,000