X0303 4 2010-09-10 false 0001038357 PIONEER NATURAL RESOURCES CO PXD 0001121922 KELLUM DANNY L 5205 N. O'CONNOR BLVD., SUITE 200 IRVING TX 75039 false true false false EVP, Permian Operations Common Stock 532 I 401(k) Common Stock 2010-09-10 4 S false 700 63.51 D 111104 D Common Stock 2010-09-10 4 S false 200 63.54 D 110904 D Common Stock 2010-09-10 4 S false 200 63.55 D 110704 D Common Stock 2010-09-10 4 S false 200 63.57 D 110504 D Common Stock 2010-09-10 4 S false 200 63.605 D 110304 D Common Stock 2010-09-10 4 S false 1249 63.6232 D 109055 D Common Stock 2010-09-10 4 S false 1900 63.6429 D 107155 D Common Stock 2010-09-10 4 S false 100 63.65 D 107055 D Common Stock 2010-09-10 4 S false 100 63.655 D 106955 D Common Stock 2010-09-10 4 S false 100 63.66 D 106855 D Common Stock 2010-09-10 4 S false 3200 63.67 D 103655 D Common Stock 2010-09-10 4 S false 100 63.675 D 103555 D Common Stock 2010-09-10 4 S false 651 63.68 D 102904 D Common Stock 2010-09-10 4 S false 100 63.6975 D 102804 D Common Stock 2010-09-10 4 S false 200 63.7 D 102604 D Common Stock 2010-09-10 4 S false 100 63.715 D 102504 D Common Stock 2010-09-10 4 S false 500 63.72 D 102004 D Common Stock 2010-09-10 4 S false 200 63.74 D 101804 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) Plan. Mark H. Kleinman, Attorney-in-Fact for Danny L. Kellum 2010-09-13