Other Expense (Schedule Of Components Of Other Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Tangible Asset Impairment Charges	$ 61,812	[1]	$ 5,719	[1]	$ 3,126	[1]
Transportation commitment charge	39,121	[2]	38,830	[2]	23,841	[2]
Other	16,386		17,940		11,884
Above market drilling and rig termination costs	9,771	[3]	33,124	[3]	20,163	[3]
Contingency and environmental accrual adjustments	9,277		478		4,057
Terminated Drilling Rig Expense	1,019	[4]	15,747	[4]	0	[4]
Business Combination, Acquisition Related Costs	0		2,337		0
Total other expense	137,386		114,175		63,071
Inventory [Member]
Tangible Asset Impairment Charges	36,300
Sendero [Member]
Tangible Asset Impairment Charges	$ 25,500

[1] Represents charges of $36.3 million to reduce excess materials and supplies inventories to their market value and a charge of $25.5 million to reduce the carrying value of Sendero to its estimated fair value. See Notes C and D for additional information on the fair value of Sendero and material and supplies inventory, respectively.

[2] Primarily represents firm transportation payments on excess pipeline capacity commitments.

[3] Primarily represents expenses attributable to the portion of Pioneer's contracted drilling rig rates that were above market rates and idle drilling rig and fracture stimulation fleet fees, neither of which were chargeable to joint operations.

[4] Primarily represents charges to terminate rig contracts that were not required to meet planned drilling activities.