Subsequent Events (Details) - Subsequent Event $ in Millions	Oct. 18, 2018 USD ($) production_system
Subsequent Event [Line Items]
Number of subsea production systems (up to) \| production_system	30
Percentage of vendor financing (up to)	30.00%
Portion of Frame Agreement
Subsequent Event [Line Items]
Estimated value of subsea production systems \| $	$ 207

Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(d))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_InventoryNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant