Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2019	Apr. 04, 2020
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ 9,420,000	$ 9,560,000
Property, plant and equipment, net	6,178,555	6,416,959
Carrying Value of One Field of Wells [Member]
Property, Plant and Equipment [Line Items]
Non-cash impairment charge	35,000
Property, plant and equipment, net	12,300	12,000
Carrying Value of Two Field of Wells [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 66,600	$ 65,300

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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