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Subsequent Event (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012 Branches	Jul. 19, 2012
Subsequent Event (Textual) [Abstract]
Cash on hand for acquisition of CE Franklin	2,014
CE Franklin [Member]
Subsequent Event (Textual) [Abstract]
Cash on hand for acquisition of CE Franklin		$ 235
No of branches of CE Franklin	39

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- Definition

Number of branches.

+ References

No definition available.

+ Details

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- Details

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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