CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 240	$ (1,971)	$ 967	$ (938)
OTHER COMPREHENSIVE INCOME (LOSS), NET OF INCOME TAX:
Unrealized gain on derivative instruments, net of income tax expense of $1 million, $1 million, $1 million and $1 million	2	3	2	3
Reclassification of (gain) loss on settled derivative instruments, net of income tax expense (benefit) of $1 million, ($3) million, $8 million and ($10) million	2	(6)	13	(18)
Unrealized loss on investments, net of income tax benefit of ($1) million, ($2) million, ($4) million and ($4) million	(1)	(3)	(6)	(7)
Reclassification of (gain) loss on investment, net of income tax expense (benefit) of ($1) million, $0, $3 million and $0	(2)	0	4	0
Other Comprehensive Income (Loss)	1	(6)	13	(22)
COMPREHENSIVE INCOME (LOSS)	241	(1,977)	980	(960)
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(38)	(41)	(127)	(131)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE	$ 203	$ (2,018)	$ 853	$ (1,091)