Reflects when the credit facility terminates, in years.

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- Definition

The number of debt instruments related to our interest rate swaps.

+ Details

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Namespace Prefix:	hal
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- Definition

Monetary amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

+ Details

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- Definition

The reference rate for the variable rate of the interest rate derivative, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ Details

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- Definition

Fixed interest rate related to the interest rate derivative.

+ Details

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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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- Details

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- Definition

Reflects when the credit facility first became available, which may be presented in a variety of ways (year, month and year, day, month and year, quarter).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Period Type:	instant

Debt (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended	3 Months Ended
Debt (Details) (USD $)	Jun. 30, 2011	Sep. 30, 2011 New Revolving Credit Facility [Member]	Dec. 31, 2010 Existing Revolving Credit Facility [Member]	Jun. 30, 2011 Interest Rate Swaps on 6.15% Senior Notes Due 2019 [Member]	Jun. 30, 2011 Interest Rate Swaps on 5.9% Senior Notes Due 2018 [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity of credit facility		$ 2,000,000,000	$ 1,200,000,000
Expiration of credit facility (in years)		5Y
Initiation date of credit facility		February 22, 2011	July 2007
Interest rate swaps [Abstract]
Number of debt instruments related to interest rate swaps	2
Derivative [Line Items]
Notional amount				$ 600,000,000	$ 400,000,000
Fixed rate received (in hundredths)				6.15%	5.90%
Variable rate paid				floating rate of three-month LIBOR plus a spread	floating rate of three-month LIBOR plus a spread