v2.3.0.15
Accounts Receivable (Details) (USD $)
In Millions
Sep. 30, 2011
Dec. 31, 2010
Accounts Receivable  
Oil, gas and NGL sales$ 819$ 786
Joint interest billings269204
Marketing and midstream revenues185165
Other16657
Gross accounts receivable1,4391,212
Allowance for doubtful accounts(9)(10)
Net accounts receivable$ 1,430$ 1,202