Basis of Presentation (Details) $ in Millions	Dec. 31, 2018 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reclassification of Capital Leases to Other Assets	$ 88
Reclassification of Capital Leases to Other Liabilities	$ 109

The total amount of capital leases reclassified from property, plant and equipment to other assets on our balance sheet upon adoption of the new lease accounting standard on January 1, 2019.

No definition available.

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