Subsequent Events (Details) - Subsequent Event [Member] $ in Millions	Jan. 31, 2018 USD ($)
Subsequent Event [Line Items]
Payments to Acquire Businesses, Gross	$ 775.0
Debt Instrument, Face Amount	1,600.0
Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Debt Instrument, Face Amount	200.0
Credit Facility [Domain]
Subsequent Event [Line Items]
Debt Instrument, Face Amount	$ 1,400.0

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant