Acquisitions (Acquired Intangible Assets) (Details) - National Pump $ in Millions	1 Months Ended
Apr. 30, 2014 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 289
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 274
Life (years)	10 years
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 15
Life (years)	6 years

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration