Segment Reporting Goodwill (Details) - Commercial Industries segment [Member] $ in Billions	Mar. 31, 2017 USD ($)
Goodwill [Line Items]
Goodwill, Fair Value Disclosure	$ 1.5
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	8.90%

Fair value portion of asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258

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