Condensed Consolidating Statement of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues	$ 277,078	$ 236,959
Operating expenses
Operating expenses	92,913	82,763
Depreciation and amortization expense	85,544	66,650
General and administrative expense	34,180	23,734
Other operating expense	1,805	91
Total operating expenses	214,442	173,238
Operating income	62,636	63,721
Other income (expense)
Income from unconsolidated affiliates	42,878	25,008
Interest expense	(38,573)	(27,062)
Other income	392	269
Income before income tax expense	67,333	61,936
Income tax expense	1,804	1,240
Net income	65,529	60,696
Net income attributable to noncontrolling interest	4,451	1,158
Net income attributable to Access Midstream Partners, L.P.	61,078	59,538
Eliminations
Revenues
Operating expenses
Operating expenses
Depreciation and amortization expense
General and administrative expense
Other operating expense
Total operating expenses
Operating income
Other income (expense)
Income from unconsolidated affiliates	(107,297)	(88,703)
Interest expense
Other income
Income before income tax expense	(107,297)	(88,703)
Income tax expense
Net income	(107,297)	(88,703)
Net income attributable to noncontrolling interest	4,451	1,158
Net income attributable to Access Midstream Partners, L.P.	(111,748)	(89,861)
Parent | Reportable Legal Entities
Revenues
Operating expenses
Operating expenses
Depreciation and amortization expense
General and administrative expense
Other operating expense
Total operating expenses
Operating income
Other income (expense)
Income from unconsolidated affiliates	99,651	86,604
Interest expense	(38,573)	(27,066)
Other income
Income before income tax expense	61,078	59,538
Income tax expense
Net income	61,078	59,538
Net income attributable to noncontrolling interest
Net income attributable to Access Midstream Partners, L.P.	61,078	59,538
Guarantor Subsidiaries | Reportable Legal Entities
Revenues	245,992	229,570
Operating expenses
Operating expenses	80,179	80,601
Depreciation and amortization expense	80,870	64,832
General and administrative expense	32,526	23,578
Other operating expense	1,878	91
Total operating expenses	195,453	169,102
Operating income	50,539	60,468
Other income (expense)
Income from unconsolidated affiliates	50,524	27,107
Interest expense
Other income	392	269
Income before income tax expense	101,455	87,844
Income tax expense	1,804	1,240
Net income	99,651	86,604
Net income attributable to noncontrolling interest
Net income attributable to Access Midstream Partners, L.P.	99,651	86,604
Non-Guarantor Subsidiaries | Reportable Legal Entities
Revenues	31,086	7,389
Operating expenses
Operating expenses	12,734	2,162
Depreciation and amortization expense	4,674	1,818
General and administrative expense	1,654	156
Other operating expense	(73)
Total operating expenses	18,989	4,136
Operating income	12,097	3,253
Other income (expense)
Income from unconsolidated affiliates
Interest expense		4
Other income
Income before income tax expense	12,097	3,257
Income tax expense
Net income	12,097	3,257
Net income attributable to noncontrolling interest
Net income attributable to Access Midstream Partners, L.P.	$ 12,097	$ 3,257