Acquisitions And Divestitures (Tables) (Chesapeake Property Acquisition [Member])

3 Months Ended

Mar. 31, 2015

Chesapeake Property Acquisition [Member]

Business Acquisition [Line Items]

Summary Of Consideration Paid And Fair Value Of Assets Acquired And Liabilities Assumed

Consideration (in millions):
Cash	$	4,978
Recognized amounts of identifiable assets acquired and liabilities assumed:
Assets acquired:
Proved natural gas and oil properties		1,424
Unproved natural gas and oil properties		3,605
Other property and equipment		19
Inventory		2
Other receivables		27
Total assets acquired		5,077
Liabilities assumed:
Asset retirement obligations		(42)
Other long-term liabilities		(57)
Total liabilities assumed		(99)
	$	4,978

Summary Of Consolidated Results Of Operations On Pro Forma Basis

	For the three months ended
	March 31,
	2014
	(in millions, except per share amounts) (unaudited)
Revenues	$	1,251
Net income	$	243
Earnings per common share:
Basic	$	0.48
Diluted	$	0.48