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Amount classified as assets attributable to disposal group held for sale or disposed of.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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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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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Reduction in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash.

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Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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Amount classified as deferred revenue attributable to disposal group held for sale or disposed of.

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Amount classified as goodwill attributable to disposal group held for sale or disposed of.

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Amount of noncash consideration received for selling an asset or business through a noncash (or part noncash) transaction.

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The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or the sale of investment in consolidated subsidiaries (generally greater than 50 percent).

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Divestures and Business Combinations - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2020	Jan. 07, 2019	Dec. 31, 2020
Dynasty Marketplace, Inc.
Business Acquisition [Line Items]
Percentage of voting equity interest		100.00%
Total purchase consideration		$ 60.2
Amount retained to satisfy adjustments		6.0
Acquisition costs		$ 0.3
MyCase
Business Acquisition [Line Items]
Capitalized software			$ 3.9
MyCase \| Discontinued operations, disposed of by sale
Business Acquisition [Line Items]
Consideration for disposal of subsidiary	$ 193.0
Proceeds from divestiture of subsidiary	192.2
Employee retention bonus pool	2.2
Cash divested	0.8
Working capital adjustment	$ 0.6
Retention period	1 year
Gain on sale of subsidiary	$ 187.7
Assets divested	4.6
Capitalized software	3.9
Deferred revenue	2.8
Goodwill	2.3
Income received	$ 1.1