Basis of Presentation Subsequent Event (Details) $ in Millions	Jul. 31, 2017 USD ($)
Subsequent Event [Member]
Subsequent Event [Line Items]
Acquisition Costs, Period Cost	$ 205

The cash outflow associated with other payments to acquire businesses including deposit on pending acquisitions and preacquisition costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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