Components of Other Operating Expenses (Details) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Other Operating Income (Expense) [Member]
Component of Operating Other Cost and Expense [Line Items]
Insurance Recoveries	$ 5
Operating Expense [Member]
Component of Operating Other Cost and Expense [Line Items]
Insurance Recoveries	$ 3

The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Name:	us-gaap_InsuranceRecoveries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration