Income Taxes (Provision) (Details)	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Income Taxes
Effective tax rate	(0.80%)	(7.40%)
Annual effective tax rate excluding discrete items (as a percent)	(16.40%)	(24.70%)

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration