Revenue - Impact of ASU Adoption (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Impact of ASU adoption
Practical expedient, incremental costs of obtaining a contract	true
ASC 606
Impact of ASU adoption
Impact of adoption on retained earnings, net of tax		$ 6.1
Impact of the adoption on retained earnings, amount related to taxes		$ 2.1

Represents amount of the impact of adoption on retained earnings.

No definition available.

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- Definition

Amount of the cumulative effect on retained earnings net of related income tax effect.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794

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- Definition

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+ References

No definition available.

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- Definition

Indicates (true false) whether practical expedient was elected to recognize incremental cost of obtaining contract as expense when incurred if amortization period would have been one year or less.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL51790836-203054

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130569-203045

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