The value (monetary amount) of the award the plaintiff seeks in the legal matter.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

Name:	us-gaap_LossContingencyDamagesSoughtValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Contingencies (Narrative) (Details) - USD ($) $ in Millions		1 Months Ended
Contingencies (Narrative) (Details) - USD ($) $ in Millions	May 01, 2019	Jul. 31, 2019	Jan. 31, 2019	Sep. 30, 2019	Jul. 30, 2019
Loss Contingencies [Line Items]
Decline in backlog as a result of potential contract termination		$ 14.0
Letters of credit outstanding, amount				$ 90.0	$ 100.0
SHI Matter
Loss Contingencies [Line Items]
Liabilities arising from arbitration	$ 180.0		$ 10.0