KBR Separation (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
KBR Separation [Abstract]
Beneficial Interest in TSKJ of owners (in hundredths)	25.00%
KBR Beneficial Interest in MWKL (in hundredths)	55.00%
KBR indemnities and guarantees excluding amounts related to the DOJ and SEC settlements	$ 53	$ 63

Name:

hal_FormerSubsidiaryIndemnitiesGuaranteesExcludingAmountsRelatedToDepartmentOfJusticeSecuritiesExchangeCommissionSettlements

Namespace Prefix:

hal

Data Type:

xbrli:monetaryItemType

Balance Type:

credit

Period Type:

instant