Income Taxes	9 Months Ended
Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Company estimates its annual effective income tax rate for continuing operations in recording its quarterly provision for income taxes in the various jurisdictions in which the Company operates. Non-cash impairments of the carrying value of the Company’s oil and gas properties, statutory tax rate changes, and other significant or unusual items are recognized as discrete items in the quarter in which they occur. During the third quarter of 2016, Apache’s effective income tax rate was primarily impacted by non-cash impairments of the carrying value of the Company’s oil and gas properties, non-cash impairments of the Company’s PRT decommissioning asset, the impact of the change in U.K. statutory income tax rate, and an increase in the amount of valuation allowances on U.S. and Canadian deferred tax assets. On September 15, 2016, U.K. Finance Act 2016 received Royal Assent. Under the enacted legislation, the corporate income tax rate on North Sea oil and gas profits was reduced from 50 percent to 40 percent effective January 1, 2016. As a result of the enacted legislation in the third quarter of 2016, the Company recorded a deferred tax benefit of $235 million related to the remeasurement of the Company’s December 31, 2015 U.K. deferred income tax liability. During the third quarter of 2015, Apache’s effective tax rate was primarily impacted by non-cash impairments of the carrying value of the Company’s oil and gas properties and an increase in the amount of valuation allowances on Canadian deferred tax assets, U.S. foreign tax credits, and U.S. net operating loss carryforwards. Apache’s 2016 year-to-date effective tax rate was primarily impacted by non-cash impairments of the carrying value of the Company’s oil and gas properties, non-cash impairments of the Company’s PRT decommissioning asset, the impact of the change in U.K. statutory income tax rate, and an increase in the amount of valuation allowances on U.S. and Canadian deferred tax assets. Apache's 2015 year-to-date effective tax rate was primarily impacted by non-cash impairments of the carrying value of the Company’s oil and gas properties and an increase in the amount of valuation allowances on Canadian deferred tax assets, U.S. foreign tax credits, and U.S. net operating loss carryforwards, offset by a $414 million deferred tax benefit associated with a reduction in the U.K. statutory income tax rate from 62 percent to 50 percent.

INCOME TAXES

The Company estimates its annual effective income tax rate for continuing operations in recording its quarterly provision for income taxes in the various jurisdictions in which the Company operates. Non-cash impairments of the carrying value of the Company’s oil and gas properties, statutory tax rate changes, and other significant or unusual items are recognized as discrete items in the quarter in which they occur.

During the third quarter of 2016, Apache’s effective income tax rate was primarily impacted by non-cash impairments of the carrying value of the Company’s oil and gas properties, non-cash impairments of the Company’s PRT decommissioning asset, the impact of the change in U.K. statutory income tax rate, and an increase in the amount of valuation allowances on U.S. and Canadian deferred tax assets.

On September 15, 2016, U.K. Finance Act 2016 received Royal Assent. Under the enacted legislation, the corporate income tax rate on North Sea oil and gas profits was reduced from 50 percent to 40 percent effective January 1, 2016. As a result of the enacted legislation in the third quarter of 2016, the Company recorded a deferred tax benefit of $235 million related to the remeasurement of the Company’s December 31, 2015 U.K. deferred income tax liability.

During the third quarter of 2015, Apache’s effective tax rate was primarily impacted by non-cash impairments of the carrying value of the Company’s oil and gas properties and an increase in the amount of valuation allowances on Canadian deferred tax assets, U.S. foreign tax credits, and U.S. net operating loss carryforwards.

Apache’s 2016 year-to-date effective tax rate was primarily impacted by non-cash impairments of the carrying value of the Company’s oil and gas properties, non-cash impairments of the Company’s PRT decommissioning asset, the impact of the change in U.K. statutory income tax rate, and an increase in the amount of valuation allowances on U.S. and Canadian deferred tax assets. Apache's 2015 year-to-date effective tax rate was primarily impacted by non-cash impairments of the carrying value of the Company’s oil and gas properties and an increase in the amount of valuation allowances on Canadian deferred tax assets, U.S. foreign tax credits, and U.S. net operating loss carryforwards, offset by a $414 million deferred tax benefit associated with a reduction in the U.K. statutory income tax rate from 62 percent to 50 percent.