Condensed Consolidated Statements of Operations and Comprehensive Income (Parenthetical) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($)
Income Statement [Abstract]
Net earnings from discontinued operations, tax expense (benefit)	$ (0.1)

Amount of tax expense (benefit) attributable to income (loss) from operations classified as a discontinued operation. Excludes tax expense (benefit) for gain (loss) on disposal and for provision for gain (loss) until disposal.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration