Supplemental Guarantor Information - Condensed Consolidating Statement of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Total revenues	$ 211,473	$ 174,675
Costs and Expenses:
Interest expense	73,365	66,049
Depreciation and amortization	101,361	86,340
General and administrative expense	13,978	5,189
Operating expense (exclusive of depreciation, accretion and amortization)	22,125	4,707
Transaction related costs	9,684	3,910
Other expense	11,339
Total costs and expenses	231,852	166,195
(Loss) income before income taxes	(20,379)	8,480
Income (benefit) tax expense	(379)	444
Net (loss) income	(20,000)	8,036
Comprehensive (loss) income	(10,559)	(32,326)
Eliminations
Costs and Expenses:
Interest expense	(72,247)	(66,145)
Total costs and expenses	(72,247)	(66,145)
Earnings (loss) from consolidated subsidiaries	(108,565)	(129,134)
(Loss) income before income taxes	(36,318)	(62,989)
Net (loss) income	(36,318)	(62,989)
Comprehensive (loss) income	(45,759)	(22,627)
Uniti, Inc.
Costs and Expenses:
Interest expense	70,372	66,145
General and administrative expense	1,628	930
Other expense	10,910
Total costs and expenses	82,910	67,075
Earnings (loss) from consolidated subsidiaries	62,910	75,111
(Loss) income before income taxes	(20,000)	8,036
Net (loss) income	(20,000)	8,036
Comprehensive (loss) income	(10,559)	(32,326)
CSL Capital, LLC
Costs and Expenses:
Interest expense	72,247	66,145
Total costs and expenses	72,247	66,145
Earnings (loss) from consolidated subsidiaries	69,358	75,214
(Loss) income before income taxes	(2,889)	9,069
Net (loss) income	(2,889)	9,069
Comprehensive (loss) income	1,677	(31,373)
Guarantors
Revenues:
Total revenues	194,441	168,294
Costs and Expenses:
Interest expense	2,693	(96)
Depreciation and amortization	72,890	64,089
General and administrative expense	10,260	4,163
Operating expense (exclusive of depreciation, accretion and amortization)	12,819
Transaction related costs	8,597	3,910
Other expense	429
Total costs and expenses	107,688	72,066
Earnings (loss) from consolidated subsidiaries	(23,703)	(21,191)
(Loss) income before income taxes	63,050	75,037
Income (benefit) tax expense	556	248
Net (loss) income	62,494	74,789
Comprehensive (loss) income	62,494	74,789
Non-Guarantors
Revenues:
Total revenues	17,032	6,381
Costs and Expenses:
Interest expense	300
Depreciation and amortization	28,471	22,251
General and administrative expense	2,090	96
Operating expense (exclusive of depreciation, accretion and amortization)	9,306	4,707
Transaction related costs	1,087
Total costs and expenses	41,254	27,054
(Loss) income before income taxes	(24,222)	(20,673)
Income (benefit) tax expense	(935)	196
Net (loss) income	(23,287)	(20,869)
Comprehensive (loss) income	(18,412)	(20,789)
Leasing
Revenues:
Total revenues	170,306	168,613
Costs and Expenses:
Depreciation and amortization	86,506	85,403
Leasing | Guarantors
Revenues:
Total revenues	169,335	168,266
Leasing | Non-Guarantors
Revenues:
Total revenues	971	347
Fiber Infrastructure
Revenues:
Total revenues	34,812
Costs and Expenses:
Depreciation and amortization	13,221
Fiber Infrastructure | Guarantors
Revenues:
Total revenues	24,780
Fiber Infrastructure | Non-Guarantors
Revenues:
Total revenues	10,032
Consumer CLEC
Revenues:
Total revenues	4,927	6,034
Costs and Expenses:
Depreciation and amortization	652	814
Consumer CLEC | Non-Guarantors
Revenues:
Total revenues	4,927	6,034
Towers
Revenues:
Total revenues	1,428	28
Costs and Expenses:
Depreciation and amortization	886	30
Towers | Guarantors
Revenues:
Total revenues	326	$ 28
Towers | Non-Guarantors
Revenues:
Total revenues	$ 1,102