Restructuring, Impairment and Other Charges (Narrative) (Details) $ in Millions	3 Months Ended
Mar. 31, 2016 USD ($)
Restructuring, Impairment and Other Charges [Abstract]
Restructuring, impairment and other charges	$ 80

Amount of restructuring charges, remediation cost, and asset impairment loss.

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=63488584&loc=d3e20235-122688

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