Commitments and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Unemployment benefits, possible liability with a change in control	$ 39.7
Unemployment benefits, possible liability without a change in control	$ 16.8
WorkLLama
Other Commitments [Line Items]
Maximum potential capital contributions		$ 22.5
Payments to acquire equity method investment		$ 9.0
Minimum
Other Commitments [Line Items]
Period for providing minimum compensation salary and continuation of certain benefits to executives under employment agreements	6 months
Severance payment as a percentage of annual salary	100.00%
Severance payment as a percentage of annual bonus	50.00%
Maximum
Other Commitments [Line Items]
Period for providing minimum compensation salary and continuation of certain benefits to executives under employment agreements	3 years
Severance payment as a percentage of annual salary	300.00%
Severance payment as a percentage of annual bonus	300.00%

Employment Agreement, Severance Percentage Of Annual Bonus

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Employment Agreement, Severance Percentage Of Annual Salary

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- Definition

Equity Method Investment, Contingent Consideration, Range Of Possible Outcomes, High

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- Definition

Period for continuation of minimum compensation and benefits under certain executive employee agreements.

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Supplemental unemployment benefits for employees under contract that are terminated without good cause or the employee resigns for good reason following a change in control.

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Supplemental unemployment benefits for employees under contract that are terminated without good cause or the employee resigns for good reason in the absence of a change in control.

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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.

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

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