Condensed Consolidating Statement of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues	$ 292,934	$ 247,242	$ 570,012	$ 484,201
Operating expenses
Operating expenses	97,523	82,844	190,436	165,607
Depreciation and amortization expense	89,976	71,869	175,520	138,519
General and administrative expense	37,257	25,089	71,437	48,823
Other operating (income) expense	(317)	1,892	1,488	1,983
Total operating expenses	224,439	181,694	438,881	354,932
Operating income	68,495	65,548	131,131	129,269
Other income (expense)
Income from unconsolidated affiliates	48,063	33,745	90,941	58,753
Interest expense	(42,903)	(27,732)	(81,476)	(54,794)
Other income	198	126	590	395
Income before income tax expense	73,853	71,687	141,186	133,623
Income tax expense	1,385	1,260	3,189	2,500
Net income	72,468	70,427	137,997	131,123
Net income attributable to noncontrolling interests	5,014	1,214	9,465	2,372
Net income attributable to Access Midstream Partners, L.P.	67,454	69,213	128,532	128,751
Eliminations
Other income (expense)
Income from unconsolidated affiliates	(119,924)	(99,527)	(227,221)	(188,230)
Income before income tax expense	(119,924)	(99,527)	(227,221)	(188,230)
Net income	(119,924)	(99,527)	(227,221)	(188,230)
Net income attributable to noncontrolling interests	5,014	1,214	9,465	2,372
Net income attributable to Access Midstream Partners, L.P.	(124,938)	(100,741)	(236,686)	(190,602)
Parent | Reportable Legal Entities
Other income (expense)
Income from unconsolidated affiliates	110,357	96,953	210,008	183,557
Interest expense	(42,903)	(27,740)	(81,476)	(54,806)
Income before income tax expense	67,454	69,213	128,532	128,751
Net income	67,454	69,213	128,532	128,751
Net income attributable to Access Midstream Partners, L.P.	67,454	69,213	128,532	128,751
Guarantor Subsidiaries | Reportable Legal Entities
Revenues	253,458	237,670	499,450	467,240
Operating expenses
Operating expenses	80,031	79,912	160,210	160,513
Depreciation and amortization expense	84,452	69,541	165,322	134,373
General and administrative expense	35,354	24,542	67,880	48,120
Other operating (income) expense	(350)	1,892	1,528	1,983
Total operating expenses	199,487	175,887	394,940	344,989
Operating income	53,971	61,783	104,510	122,251
Other income (expense)
Income from unconsolidated affiliates	57,630	36,319	108,154	63,426
Other income	141	111	533	380
Income before income tax expense	111,742	98,213	213,197	186,057
Income tax expense	1,385	1,260	3,189	2,500
Net income	110,357	96,953	210,008	183,557
Net income attributable to Access Midstream Partners, L.P.	110,357	96,953	210,008	183,557
Non-Guarantors | Reportable Legal Entities
Revenues	39,476	9,572	70,562	16,961
Operating expenses
Operating expenses	17,492	2,932	30,226	5,094
Depreciation and amortization expense	5,524	2,328	10,198	4,146
General and administrative expense	1,903	547	3,557	703
Other operating (income) expense	33		(40)
Total operating expenses	24,952	5,807	43,941	9,943
Operating income	14,524	3,765	26,621	7,018
Other income (expense)
Interest expense		8		12
Other income	57	15	57	15
Income before income tax expense	14,581	3,788	26,678	7,045
Net income	14,581	3,788	26,678	7,045
Net income attributable to Access Midstream Partners, L.P.	$ 14,581	$ 3,788	$ 26,678	$ 7,045