The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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=66902209&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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

Acquisitions (Details) € in Millions, $ in Millions			9 Months Ended
Acquisitions (Details) € in Millions, $ in Millions	Sep. 03, 2015 USD ($)	Sep. 03, 2015 EUR (€)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Business Acquisition [Line Items]
Total cash consideration paid for acquisitions, net of cash acquired			$ 56.9	$ 240.7
7S Group GmbH
Business Acquisition [Line Items]
Total cash consideration paid for acquisitions, net of cash acquired	$ 140.4	€ 125.3