Restructuring Other Related Charges (Details) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($)
Other Related Charges [Abstract]
Other Nonrecurring Expense	$ 3

Amount of other expense that is infrequent in occurrence or unusual in nature.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=114868883&loc=SL114871943-224233

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