Supplemental Cash Flow Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016		Jun. 30, 2015
Cash (paid) received
Interest, net of amounts capitalized (1)	$ 427		$ 1,621	[1]
Income taxes, net of refunds (2)	(883)	[2]	6
Non-cash investing activities
Fair value of properties and equipment from non-cash transactions	3		126
Asset retirement cost additions	49		90
Accruals of property, plant, and equipment	505		901
Net liabilities assumed (divested) in acquisitions and divestitures	(36)		(29)
Non-cash investing and financing activities
Floating production, storage, and offloading vessel construction period obligation	11		43
Related to Net Operating Loss Carryback [Member]
Cash (paid) received
Income taxes, net of refunds (2)	$ 881
Tronox Litigation [Member] | Judicial Ruling [Member]
Cash (paid) received
Interest, net of amounts capitalized (1)			$ 1,200

[1] Includes $1.2 billion of interest related to the Tronox settlement payment in 2015.

[2] Includes $881 million from a tax refund related to the income tax benefit associated with the Company’s 2015 tax net operating loss carryback.