X0303 4 2011-02-23 false 0001038357 PIONEER NATURAL RESOURCES CO PXD 0001203784 CHEATWOOD CHRIS J 5205 N. O'CONNOR BLVD., SUITE 200 IRVING TX 75039 false true false false EVP, BD & Technology Common Stock 130 I 401(k) Common Stock 2011-02-23 4 S false 8668 100.7603 D 83223 D Common Stock 2011-02-23 4 S false 7155 100.7871 D 76068 D Common Stock 2011-02-23 4 S false 4990 100.85 D 71078 D Common Stock 2011-02-23 4 S false 218 100.87 D 70860 D Common Stock 2011-02-23 4 S false 100 100.8703 D 70760 D Common Stock 2011-02-23 4 S false 700 100.8704 D 70060 D Common Stock 2011-02-23 4 S false 300 100.871 D 69760 D Common Stock 2011-02-23 4 S false 914 100.88 D 68846 D Common Stock 2011-02-23 4 S false 118 100.89 D 68728 D Common Stock 2011-02-23 4 S false 18 100.9 D 68710 D Common Stock 2011-02-23 4 S false 500 100.9001 D 68210 D Common Stock 2011-02-23 4 S false 200 100.9003 D 68010 D Common Stock 2011-02-23 4 S false 14 100.91 D 67996 D Common Stock 2011-02-23 4 S false 869 100.92 D 67127 D Common Stock 2011-02-23 4 S false 100 100.9201 D 67027 D Common Stock 2011-02-23 4 S false 100 100.93 D 66927 D Common Stock 2011-02-23 4 S false 200 100.94 D 66727 D Common Stock 2011-02-23 4 S false 100 100.95 D 66627 D Consists of shares beneficially owned as a result of reporting person's ownership of units in the Pioneer Natural Resources USA, Inc. 401(k) Mark H. Kleinman, Attorney-in-Fact For Chris J. Cheatwood 2011-02-24