Reflects when the credit facility terminates, in years.

Name:	hal_LineOfCreditFacilityExpirationInYears
Namespace Prefix:	hal
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ Details

Name:	hal_NumberOfDebtInstrumentsRelatedToInterestRateSwaps
Namespace Prefix:	hal
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_DerivativeDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fixed interest rate related to the interest rate derivative.

+ Details

Name:	us-gaap_DerivativeFixedInterestRate
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
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

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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

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

+ Details

Name:	us-gaap_LineOfCreditFacilityInitiationDate
Namespace Prefix:	us-gaap
Data Type:	us-types:dateStringItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt (Details) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended	3 Months Ended
Debt (Details) (USD $)	Jun. 30, 2011	Jun. 30, 2011 New Revolving Credit Facility [Member]	Dec. 31, 2010 Existing Revolving Credit Facility [Member]	Jun. 30, 2011 Interest Rate Swaps on 6.15 Percent Senior Notes Due 2019 [Member]	Jun. 30, 2011 Interest Rate Swaps on 5.9 Percent 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)		5
Initiation date of credit facility		February 22 2011	July 2007
Number of debt instruments related to interest rate swaps	2
Derivative [Line Items]
Series of interest rate swaps, notional amount				$ 600,000,000	$ 400,000,000
Fixed rate received on series of interest rate swaps (in hundredths)				6.15%	5.90%
Variable rate paid on series of interest rate swaps				floating rate of three-month LIBOR plus a spread	floating rate of three-month LIBOR plus a spread