CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 625	$ 1,037	$ 728	$ 1,033
Other comprehensive income (loss), net of income tax:
Unrealized gain (loss) on derivative instruments, net of income tax expense (benefit) of $1 million, ($2) million, $0 and $0	1	(3)	0	0
Reclassification of (gain) loss on settled derivative instruments, net of income tax expense (benefit) of $0, ($6) million, $7 million and ($7) million	(1)	(11)	11	(12)
Unrealized gain (loss) on investments, net of income tax expense (benefit) of $0, ($6) million, ($3) million and ($2) million	0	(9)	(5)	(3)
Reclassification of impairment of investment, net of income tax expense (benefit) of $0, $0, $4 million and $0	0	0	6	0
Other comprehensive income (loss)	0	(23)	12	(15)
COMPREHENSIVE INCOME	625	1,014	740	1,018
COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(45)	(65)	(89)	(89)
COMPREHENSIVE INCOME ATTRIBUTABLE TO CHESAPEAKE	$ 580	$ 949	$ 651	$ 929