Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Sep. 29, 2018	Jun. 29, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Accumulated depreciation		$ 9,460,000	$ 9,190,000
Property, plant and equipment, net		5,797,513	5,334,748
Carrying Value of Two Field of Wells [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net		68,600	71,000
Impairment of assets	$ 110,000
Carrying Value of Third Field of Wells [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net		$ 49,500	$ 51,800

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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