Revenue from Contracts with Clients and Customers - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Increase (decrease) in costs to fulfill contracts with customers from new projects	$ (0.3)	$ (1.2)
Increase in contract assets	6.1	4.6
Amortization of costs to fulfill contract assets	6.4	5.8
Changes in net contract liabilities	(0.5)	(1.5)
Increase in contract liabilities for new projects	10.8	8.1
Change in contract liabilities from amortization and recognition and recognition of revenue	$ (11.3)	(9.6)
Contract loss		$ 0.2

Capitalized Contracts Costs, Costs Incurred

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- Definition

Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue

+ References

No definition available.

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- Definition

Contract with Customer, Liability, Liabilities Incurred

+ References

No definition available.

+ Details

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- Definition

Increase (Decrease) in Capitalized Contract Costs, Net

+ References

No definition available.

+ Details

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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

+ Details

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- Definition

Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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- References

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