New Accounting Pronouncements (Details) $ in Millions	Dec. 31, 2017 USD ($)
New Accounting Pronouncements [Abstract]
Effect of early adoption of income tax consequences of intra-entity transfer of assets other than inventory	$ (384)

Effect of early adoption of income tax consequences of intra-entity transfer of assets other than inventory on retained earnings as a cumulative-effect adjustment.

No definition available.

Name:	hal_Effectofearlyadoptionofincometaxconsequencesofintraentitytransferofassetsotherthaninventory
Namespace Prefix:	hal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant