Cash And Cash Equivalents Table - Schedule of Non-Cash Investing & Financing Activities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
NON-CASH INVESTING ACTIVITIES:
Accrued capital expenditures	$ 693	$ 339
Accrued advances to unconsolidated affiliates	0	175
Net gains from subsidiary common unit issuances	50	560
NON-CASH FINANCING ACTIVITIES:
Subsidiary issuances of common units in connection with PVR and Hoover acquisitions	0	4,015
Long-term debt assumed in PVR acquisition	$ 0	$ 1,887