Accounts Receivable (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Accounts Notes And Loans Receivable [Line Items]
Malaysia Reserve for Doubtful Accounts Allowance	$ 15	$ 15
Accounts receivable, net	232	262
Allowance for Doubtful Accounts Receivable, Current	(16)	(16)
Revenue [Member]
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, net	163	94
Oil and Gas Joint Interest Billing [Member]
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, net	53	125
Other accounts receivable [Member]
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable, net	$ 32	$ 59