Nii (NIHD) 10-Q 12 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	3 Months Ended
	Mar. 31, 2014	5-May-14	Jun. 30, 2013
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Mar-14	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q1	'	'
Entity Public Float	'	'	'
Entity Registrant Name	'NII HOLDINGS INC	'	'
Entity Central Index Key	'0001037016	'	'
Entity Tax Identification Number	'911671412	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	172,357,208	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets	'	'
Cash and cash equivalents	$1,299,769	$1,733,783
Short-term investments	305,208	585,760
Accounts receivable, less allowance for doubtful accounts of $71,869 and $66,252	501,450	522,563
Handset and accessory inventory	411,058	342,585
Deferred income taxes, net	110,633	127,395
Prepaid expenses and other	562,414	436,100
Total current assets	3,190,532	3,748,186
Property, plant and equipment, net	3,395,029	3,388,060
Intangible assets, net	1,013,124	993,669
Deferred income taxes, net	28,178	26,713
Other assets	562,802	523,326
Total assets	8,189,665	8,679,954
Current liabilities	'	'
Accounts payable	316,112	369,056
Accrued expenses and other	857,177	972,534
Deferred revenues	119,004	128,148
Current portion of long-term debt	103,535	96,839
Deposit Liability, Current	715,782	720,013
Total current liabilities	2,111,610	2,286,590
Long-term debt	5,749,290	5,696,632
Deferred revenues	10,558	11,238
Deferred credits	97,308	108,991
Other long-term liabilities	229,664	221,116
Total liabilities	8,198,430	8,324,567
Stockholders' equity	'	'
Undesignated preferred stock, par value $0.001, 10,000 shares authorized - 2012 and 2011, no shares issued or outstanding - 2012 and 2011	0	0
Common stock, par value $0.001, 600,000 shares authorized - 2012 and 2011, 171,191 shares issued and outstanding - 2012, 171,177 shares issued and outstanding - 2011	172	172
Paid-in capital	1,508,335	1,504,258
Retained earnings	-569,045	-192,966
Accumulated other comprehensive loss	-948,227	-956,077
Total stockholders' equity	-8,765	355,387
Total liabilities and stockholders' equity	$8,189,665	$8,679,954

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Allowance for doubtful accounts receivable, current	$65,123	$61,293
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	600,000,000	600,000,000
Common stock shares issued	172,106,000	172,105,000
Common stock shares outstanding	172,105,746	172,104,720

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Income (Loss) from Continuing Operations, Per Basic Share	($2.19)	($1.08)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	$0	($0.13)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	$21	($21,684)
Income (Loss) from Continuing Operations Attributable to Parent	-376,100	-185,820
Operating revenues	'	'
Service and other revenues	913,905	1,283,076
Handset and accessory revenues	56,309	47,763
Total operating revenues	970,214	1,330,839
Operating expenses	'	'
Cost of service (exclusive of depreciation and amortization included below)	337,583	399,093
Cost of handsets and accessories	265,805	206,301
Selling, general and administrative	450,757	497,532
Provision for Doubtful Accounts	28,504	16,503
Restructuring, Settlement and Impairment Provisions	-2,527	124,607
Depreciation	140,555	167,463
Amortization	17,121	15,359
Total operating expenses	1,209,294	1,410,355
Operating income	-239,080	-79,516
Other expense	'	'
Interest expense, net	-140,212	-109,662
Interest income	20,108	6,505
Foreign currency transaction (losses) gains, net	-7,186	23,225
Other (expense) income, net	-4,690	-4,754
Total other expense	-131,980	-84,686
Income before income tax provision	-371,060	-164,202
Income tax provision	-5,040	-21,618
Net income	-376,079	-207,504
Net income, per common share, basic	($2.19)	($1.21)
Weighted Average Number of Shares Outstanding, Basic and Diluted	172,105	171,655
Comprehensive Income	'	'
Comprehensive income, net of income taxes	-368,229	-131,976
Foreign currency translation adjustment	8,419	77,453
Other	-569	-1,925
Other comprehensive income	7,850	75,528
Net income	-376,079	-207,504
Total comprehensive income	($368,229)	($131,976)

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)	Total	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Paid-in Capital	Common Stock
In Thousands
Beginning Balance, Value at Dec. 31, 2013	$355,387	($192,966)	($956,077)	$1,504,258	$172
Beginning Balance, Shares at Dec. 31, 2013	'	'	'	'	172,105
Net income	-376,079	-376,079	'	'	'
Other Comprehensive Income (Loss), Net of Tax	7,850	'	7,850	'	'
Share-based payment expense for equity-based awards	-4,077	'	'	-4,077	'
Exercise of stock options, Shares	'	'	'	'	1
Ending Balance, Value at Mar. 31, 2014	($8,765)	($569,045)	($948,227)	$1,508,335	$172
Ending Balance, Shares at Mar. 31, 2014	'	'	'	'	172,106

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net income	($376,079)	($207,504)
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	-21	21,684
Amortization of debt discount and financing costs	5,158	6,004
Depreciation and amortization	157,676	182,822
Provision for Doubtful Accounts	28,504	16,503
Foreign currency transaction losses (gains), net	7,186	-23,225
Gain (Loss) on Disposition of Assets	-2,141	126,532
Deferred income tax benefit	419	5,370
Share-based payment expense	5,154	8,803
Other, net	7,480	7,410
Change in assets and liabilities:	'	'
Accounts receivable, gross	-10,880	-225,733
Handset and accessory inventory	-69,383	20,472
Prepaid expenses and other	-174,897	10,299
Other long-term assets	-14,037	-24,447
Accounts payable, accrued expenses and other	-49,719	-53,575
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	-485,580	-128,585
Cash Provided by (Used in) Operating Activities, Discontinued Operations	21	-14,045
Net cash provided by operating activities	-485,559	-142,630
Cash flows from investing activities:	'	'
Capital expenditures	-182,327	-241,788
Purchase of long-term and short-term investments	-203,232	-176,309
Proceeds from sales of long-term and short-term investments	510,117	342,819
Payments for acquisitions, purchases of licenses and other	-34,119	-19,114
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	90,439	-94,392
Cash Provided by (Used in) Investing Activities, Discontinued Operations	-30	-27,060
Net cash used in investing activities	90,409	-121,452
Cash flows from financing activities:	'	'
Proceeds from Issuance of Senior Long-term Debt	0	750,000
Borrowings under syndicated loan facilities and other	14,691	41,780
Other, net	-19,331	-28,157
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	-4,640	763,623
Cash Provided by (Used in) Financing Activities, Discontinued Operations	0	-779
Net cash (used in) provided by financing activities	-4,640	762,844
Effect of exchange rate changes on cash and cash equivalents	-34,224	2,198
Increase (Decrease) In Cash And Cash Equivalents, Held-For-Sale	0	3,965
Net (decrease) increase in cash and cash equivalents	-434,014	504,925
Cash and cash equivalents, beginning of period	1,733,783	1,371,173
Cash and cash equivalents, end of period	$1,299,769	$1,876,098

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2014
Summary of Operations and Significant Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	General.  Our unaudited condensed consolidated financial statements have been prepared under the rules and regulations of the Securities and Exchange Commission, or the SEC. While they do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements, they reflect all adjustments that, in the opinion of management, are necessary for a fair presentation of the results for interim periods. In addition, the year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States.
	You should read these condensed consolidated financial statements in conjunction with the consolidated financial statements and notes contained in our annual report on Form 10-K for the year ended December 31, 2013, as well as our amendments to this annual report on Forms 10-K/A that were filed on February 28, 2014 and April 29, 2014. You should not expect results of operations for interim periods to be an indication of the results for a full year.
	Accumulated Other Comprehensive Loss.    As of March 31, 2014 and December 31, 2013, the tax impact on our accumulated other comprehensive loss was not material. The components of our accumulated other comprehensive loss, net of taxes, are as follows:
		31-Mar-14			31-Dec-13
		(in thousands)
	Cumulative foreign currency translation adjustment	$	(942,852	)	$	(951,271	)
	Other	(5,375		)	(4,806		)
		$	(948,227	)	$	(956,077	)
	Supplemental Cash Flow Information.
		Three Months Ended March 31,
		2014			2013
		(in thousands)
	Capital expenditures
	Cash paid for capital expenditures, including capitalized interest on	$	182,327		$	241,788
	property, plant and equipment
	Change in capital expenditures accrued and unpaid or financed, including	(64,513		)	(89,057		)
	accreted interest capitalized
		$	117,814		$	152,731
	Interest costs
	Interest expense, net	$	140,212		$	109,662
	Interest capitalized	12,722			23,620
		$	152,934		$	133,282
	For the three months ended March 31, 2014, we had $45.2 million in non-cash financing, primarily related to borrowings under our equipment financing facility in Mexico. For the three months ended March 31, 2013, we had $24.1 million in non-cash financing, primarily related to borrowings under our equipment financing facility in Mexico and co-location capital lease obligations on our communication towers in Brazil and Mexico.
	Revenue-Based Taxes.  We record revenue-based taxes and other excise taxes on a gross basis as a component of both service and other revenues and selling, general and administrative expenses in our condensed consolidated financial statements. For the three months ended March 31, 2014 and 2013, we recognized $31.1 million and $48.4 million, respectively, in revenue-based taxes and other excise taxes.
	Net Loss Per Common Share, Basic and Diluted.  Basic net loss per common share is computed by dividing adjusted net loss attributable to common shares by the weighted average number of common shares outstanding for the period. Diluted net loss per common share reflects the potential dilution of securities that could participate in our earnings, but not securities that are antidilutive, including stock options with an exercise price greater than the average market price of our common stock.
	Our unvested restricted stock awards, or RSAs, contain non-forfeitable rights to dividends, whether paid or unpaid. As a result, our RSAs are considered participating securities because their holders have the right to participate in earnings with common stockholders. We use the two-class method to allocate net income between common shares and other participating securities.
	As presented for the three months ended March 31, 2014 and 2013, our calculation of diluted net loss per common share is based on the weighted average number of common shares outstanding during those periods and does not include other potential common shares, including shares issuable upon the potential exercise of stock options under our stock-based employee compensation plans or restricted common shares issued under those plans since their effect would have been antidilutive to our net loss per common share for those periods. Furthermore, for the three months ended March 31, 2014 and 2013, we did not include 47.4 million and 12.4 million stock options, respectively, and 33.6 million and 27.7 million restricted stock units, respectively, in our calculation of diluted net loss per common share because their effect would have been antidilutive to our net loss per common share for those periods.
	Reclassifications. We have reclassified some prior period amounts in our condensed consolidated financial statements to conform to our current year presentation.
	New Accounting Pronouncements.   There were no new accounting standards issued during the three months ended March 31, 2014 that materially impacted our condensed consolidated financial statements or could materially impact our financial statements or related disclosures in a future period.

Business_Update_and_Going_Conc

Business Update and Going Concern (Notes)	3 Months Ended
	Mar. 31, 2014
Going Concern [Abstract]	'
Significant Transactions [Text Block]	'Business Update and Going Concern The accompanying condensed consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. These condensed consolidated financial statements do not include any adjustments that might result from the occurrence of any of the uncertainties described below. Our results of operations, including our operating revenues and operating cash flows, have been negatively affected by a number of factors, including competitive pressure across all of our markets, and a series of events that first arose or started to affect us to an unexpected degree in the third quarter of 2013. These events included the impact of Sprint Corporation's, or Sprint's, deactivation of its iDEN network in the U.S., the depreciation of local currencies, the impact of delays in the deployment and launch of services on our WCDMA networks, which delayed our ability to generate subscriber growth and revenues on those networks from what we had previously expected, and the increased costs to support our WCDMA networks.Due to these factors, it is probable that we will not be able to generate sufficient growth in our operating revenues and operating cash flows to meet our obligations beyond early 2015. In light of the liquidity issues we face, we are pursuing a number of options, including:b"reducing operating expenses and reducing or delaying our investments in capital expenditures, including scaling back our network development and deployment efforts;b"restructuring, reorganizing or refinancing all or a portion of our existing debt obligations, including a potential exchange of all or a portion of our existing senior debt obligations for our common stock or other equity interests, which could result in a significant dilution of the ownership interests of our current equity holders and substantially impair the value of those interests;b"selling assets or operations;b"creating partnerships or alliances; andb"selling our company.B If we believe we will be unable to significantly improve our cash flow from operations or implement measures to enable us to continue to satisfy our obligations, we may voluntarily commence reorganization proceedings, which could mean that debt and equity holders could lose all or part of their investment. The negative impact of the factors discussed above on our results of operations may also adversely affect our ability to comply with certain financial covenants in our existing debt obligations. Specifically, based on our current business plan projections and absent waivers of the non-compliance from the lenders or amendments to the financing agreements, it is probable that as of the measurement date on June 30, 2014, we will be unable to satisfy one or more of the financial covenants currently included in the equipment financing arrangements for Nextel Brazil and Nextel Mexico and in Nextel Brazilbs local bank financing arrangements. Each of these financing arrangements requires that we meet these financial covenants semi-annually, calculated as of June 30 and December 31. As of the last measurement date of December 31, 2013, we were in compliance with these covenants. As of March 31, 2014, we had $1,158.4 million principal amount outstanding under these financing arrangements. If we are unable to negotiate amendments to these financing arrangements or secure waivers from the lenders, we could be in default and we could be required to repay these borrowings. In addition, if the debt under any of these financing arrangements were to be accelerated, the holders of 25% of each series of senior notes issued by NII Capital Corp. and NII International Telecom, S.C.A. would have the right to declare that an event of default has occurred under the related indentures and could then require the immediate repayment of all borrowings represented by the senior notes. As of March 31, 2014, we had approximately $4.4 billion principal amount of senior notes outstanding. We believe we are currently in compliance with the requirements under all of our financing arrangements, including the indentures for our senior notes, our equipment financing facilities and our local bank financing arrangements. In light of the probability that, absent a waiver or amendment, we will be unable to meet the financial covenants in the equipment financing facilities and the local bank financing agreements as of the next compliance date, there is no guarantee that the lender of our equipment financing facilities will continue to fund additional borrowing requests under these facilities. In addition, a holder of more than 25% of our 8.875% senior notes, issued by NII Capital Corp. and due December 15, 2019, has provided a notice of default in connection with these notes. We believe that the allegations contained in the notice are without merit. See Note 6 for more information.The conditions described above, and their impact on our liquidity, in combination with the potential impact if we cannot satisfy certain financial covenants under our existing debt obligations, raise substantial doubt about our ability to continue as a going concern under the applicable authoritative literature.

Discontinued_Operations_Notes

Discontinued Operations (Notes)	3 Months Ended
	Mar. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	'
	.	Discontinued Operations
	Sale of Nextel Peru. In August 2013, we, together with our wholly-owned subsidiaries NII Mercosur Telecom, S.L. and NII Mercosur Moviles, S.L., completed the sale of all of the outstanding equity interests of our wholly-owned subsidiary, Nextel del Peru, S.A., or Nextel Peru, to Empresa Nacional de Telecomunicaciones S.A. and one of its subsidiaries, Entel Inversiones, S.A., which we refer to collectively as Entel, for $405.5 million in cash, which included $50.0 million that was deposited in escrow on our behalf to satisfy potential indemnification claims. In April 2014, we released $7.5 million of the amounts held in escrow to Entel as a result of the settlement of certain indemnification claims. The remaining funds held in escrow continue to be available to satisfy potential future indemnification claims. We also entered into a transition services agreement, pursuant to which we and our subsidiaries will provide certain services to Entel in order to facilitate the transition of Nextel Peru.
	In connection with the sale of Nextel Peru to Entel, we have reported Nextel Peru as a discontinued operation in this quarterly report on Form 10-Q. Accordingly, we reclassified Nextel Peru's results of operations for all periods presented to reflect Nextel Peru as discontinued operations. Unless otherwise noted, amounts included in these notes to our condensed consolidated financial statements exclude amounts attributable to discontinued operations. The major components of income (loss) from discontinued operations related to Nextel Peru were as follows (in thousands):
		Three Months Ended March 31,
		2014		2013
	Operating revenues	$	—	$	82,557
	Operating expenses	—		(105,093		)
	Other income, net	—		114
	Loss before income tax benefit	—		(22,422		)
	Income tax benefit	—		738
		—		(21,684		)
	Income on disposal of Nextel Peru	21		—
	Income (loss) from discontinued operations, net of income taxes	$	21	$	(21,684	)

Impairment_and_Restructuring_C

Impairment and Restructuring Charges (Notes)	3 Months Ended
	Mar. 31, 2014
Restructuring and Related Activities [Abstract]	'
Restructuring, Impairment, and Other Activities Disclosure [Text Block]	'
	Impairment and Restructuring (Benefits) Charges
	In January 2013, we began evaluating the feasibility of discontinuing the broader use of software previously developed for use in multiple markets to support our customer relationship management systems and the possibility of restricting its ongoing use to one market. As a result of this evaluation, in the first quarter of 2013, we recognized a non-cash asset impairment charge of $85.3 million related to the discontinuation of this software, of which $42.8 million was recognized at the corporate level, $33.5 million was recognized by Nextel Chile and $9.0 million was recognized by Nextel Mexico.
	In 2009, we entered into an agreement with Nokia Siemens Networks, or NSN, to manage our network operations infrastructure. During the first quarter of 2013, we restructured and amended this agreement, reduced the scope of the services provided by NSN, added terms to facilitate the transition of those services to us and established the terms on which further transitions of services and the termination of the NSN arrangements could be implemented in each of our markets. Under the agreements in effect prior to this restructuring, we classified a portion of the base contractual fees as a prepayment and were recognizing this prepayment over the life of the previous agreement. As a result of the restructuring with NSN, we recognized a non-cash charge of $38.6 million relating to the write-off of the remainder of the prepayment during the first quarter of 2013. In March 2014, we settled certain refund claims with NSN, which represented the majority of our impairment and restructuring benefits for the first quarter of 2014.
	Total impairment and restructuring (benefits) charges by operating segment for the three months ended March 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended
		March 31,
		2014			2013
	Brazil	$	—		$	23,814
	Mexico	(562		)	19,655
	Argentina	—			3,717
	Chile	—			33,921
	Corporate	(1,965		)	43,500
	Total impairment and restructuring (benefits) charges	$	(2,527	)	$	124,607

Balance_Sheet_Details_Notes

Balance Sheet Details (Notes)	3 Months Ended
	Mar. 31, 2014
Balance Sheet Details [Abstract]	'
Supplemental Balance Sheet Disclosures [Text Block]	'
	Note 5.	Supplemental Balance Sheet Information
	Prepaid Expenses and Other.
	The components of our prepaid expenses and other are as follows:
		March 31,			December 31,
		2014			2013
		(in thousands)
	Value-added taxes	$	230,375		$	237,119
	Spectrum fees	101,164			1,109
	Income taxes	61,215			59,054
	Other prepaid assets	115,327			96,312
	Other current assets	54,333			42,506
		$	562,414		$	436,100
	Property, Plant and Equipment, Net.
	The components of our property, plant and equipment are as follows:
		March 31,			December 31,
		2014			2013
		(in thousands)
	Land	$	9,707		$	9,652
	Building and leasehold improvements	193,438			193,376
	Digital mobile network equipment, communication towers and network software	4,981,008			4,829,134
	Office equipment, furniture and fixtures and other	806,329			785,242
	Corporate aircraft capital lease	43,374			42,747
	Less: Accumulated depreciation and amortization	(3,146,058		)	(2,995,667		)
		2,887,798			2,864,484
	Construction in progress	507,231			523,576
		$	3,395,029		$	3,388,060
	Intangible Assets, Net.
	Our intangible assets include the following:
		31-Mar-14								31-Dec-13
		Gross Carrying			Accumulated			Net Carrying		Gross Carrying		Accumulated			Net Carrying
		Value			Amortization			Value		Value		Amortization			Value
								(in thousands)
	Amortizable intangible assets:
	Licenses	$	1,259,950		$	(264,826	)	$	995,124	$	1,220,990	$	(245,321	)	$	975,669
	As of both March 31, 2014 and December 31, 2013, the balance of our indefinite lived intangible assets was $18.0 million.
	Accrued Expenses and Other.
	The components of our accrued expenses and other are as follows:
		March 31,			December 31,
		2014			2013
		(in thousands)
	Capital expenditures	$	226,283		$	290,484
	Accrued interest	115,671			128,509
	Non-income based taxes	95,710			114,360
	Payroll related items and commissions	93,232			92,852
	Network system and information technology	91,572			92,109
	Other	234,709			254,220
		$	857,177		$	972,534

Debt

Debt	3 Months Ended
	Mar. 31, 2014
Debt [Abstract]	'
Debt	'
	Debt
		31-Mar-14			31-Dec-13
		(in thousands)
	NII Capital Corp. senior notes, net	$	2,730,388		$	2,729,321
	NII International Telecom, S.C.A. senior notes, net	1,609,626			1,609,962
	Bank loans	446,195			444,268
	Brazil equipment financing	366,937			352,725
	Mexico equipment financing	346,064			300,832
	Mexico capital lease and tower financing obligations	190,954			194,227
	Brazil capital lease and tower financing obligations	125,326			122,499
	Corporate aircraft capital lease	35,273			35,736
	Other	2,062			3,901
	Total debt	5,852,825			5,793,471
	Less: current portion	(103,535		)	(96,839		)
		$	5,749,290		$	5,696,632
	NII Capital Corp. Senior Notes.
	8.875% Senior Notes due 2019. On March 19, 2014, Wilmington Trust Company, or Wilmington Trust, as trustee under the indenture relating to our 8.875% senior notes due 2019, received a notice on behalf of Aurelius Capital Management, in its capacity as the purported holder of more than 25% of these senior notes, alleging that certain internal corporate restructuring transactions undertaken in 2009, which resulted in certain subsidiary guarantees being released, violated the terms of, and constitute a default under, the indenture. These notes are senior unsecured obligations of NII Capital Corp., our wholly-owned domestic subsidiary, and are guaranteed on a senior unsecured basis by NII Holdings and all of its current and future first tier and domestic restricted subsidiaries, other than NII Capital Corp. We believe that the allegations contained in the notice are without merit.
	NII International Telecom, S.C.A. Senior Notes.
	11.375% Senior Notes due 2019. In connection with the issuance of our 11.375% senior notes due 2019, we entered into a registration rights agreement with the initial purchasers of these notes. Under this agreement, we are required to prepare and file with the SEC an exchange offer registration statement enabling holders to exchange these notes for notes having identical terms that are freely tradable, cause the exchange offer registration statement to be declared effective as promptly as possible by the SEC, and consummate the exchange offer within 360 days of the date of issue of these notes. We have not yet filed this exchange offer registration statement and are therefore subject to the additional interest provisions under the registration rights agreement and applicable indentures. Additional interest for our failure to register the notes is equal to 0.25% per year on the principal amount of the notes with respect to the first 90-day period immediately following the failure to register. The amount of additional interest will increase by an additional 0.25% per year with respect to each subsequent 90-day period, up to a maximum amount of additional interest of 1.00% per year. As of March 31, 2014, we accrued an immaterial amount of additional interest on the 11.375% notes in connection with this failure to register the notes.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements	'
Fair Value Measurements	'
	Fair Value Measurements
	Available-for-Sale Securities.
	As of March 31, 2014 and December 31, 2013, available-for-sale securities include $126.2 million and $418.6 million, respectively, in short-term investments made by Nextel Brazil in two investment funds and certificates of deposit with a Brazilian bank. These funds invest primarily in Brazilian government bonds, long-term, low-risk bank certificates of deposit and Brazilian corporate debentures. During the three months ended March 31, 2014 and 2013, we did not have any material unrealized gains or losses associated with these investments.
	We account for our available-for-sale securities at fair value in accordance with the Financial Accounting Standards Board's, or the FASB’s, authoritative guidance surrounding the accounting for investments in debt and equity securities. The fair value of the Brazilian securities is based on the net asset value of the funds. The fair value of the certificates of deposit held at the corporate level is based on quoted market prices for the individual instruments. In our judgment, both of these types of securities trade with sufficient daily observable market activity to support a Level 1 classification within the fair value hierarchy.
	Financial Instruments.
	Long-Term Debt Instruments.
	The carrying amounts and estimated fair values of our long-term debt instruments are as follows:
		31-Mar-14				31-Dec-13
		Carrying		Estimated		Carrying		Estimated
		Amount		Fair Value		Amount		Fair Value
		(in thousands)
	NII Capital Corp. senior notes, net	$	2,730,388	$	971,125	$	2,729,321	$	1,227,950
	NII International Telecom, S.C.A. senior notes, net	1,609,626		1,110,380		1,609,962		1,271,370
	Bank loans and other	448,257		351,695		448,169		373,796
	Equipment financing	713,001		650,214		653,557		620,173
		$	5,501,272	$	3,083,414	$	5,441,009	$	3,493,289
	We estimated the fair values of our senior notes using quoted market prices. Because our fair value measurement is based on market prices in an active market, we consider this Level 1 in the fair value hierarchy.
	Bank loans and other consists primarily of loans with certain banks in Brazil and Mexico. We estimated the fair value of these bank loans, as well as the fair value of our equipment financing, utilizing inputs such as U.S. Treasury security yield curves, prices of comparable bonds, LIBOR and zero-coupon yield curves, U.S. Treasury bond rates and credit spreads on comparable publicly traded bonds and consider these measurements to be Level 2 in the fair value hierarchy.
	Other Financial Instruments.
	The carrying values of cash and cash equivalents, accounts receivable and accounts payable contained in our condensed consolidated balance sheets approximate their fair values due to the short-term nature of these instruments. The fair values of our derivative instruments are not material.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Brazilian Contingencies.
	Nextel Brazil has received various assessment notices from state and federal Brazilian authorities asserting deficiencies in payments related primarily to value-added taxes, excise taxes on imported equipment and other non-income based taxes. Nextel Brazil has filed various administrative and legal petitions disputing these assessments. In some cases, Nextel Brazil has received favorable decisions, which are currently being appealed by the respective governmental authority. In other cases, Nextel Brazil's petitions have been denied, and Nextel Brazil is currently appealing those decisions. Nextel Brazil also had contingencies related to certain regulatory, civil and labor-related matters as of March 31, 2014 and December 31, 2013.
	As of March 31, 2014 and December 31, 2013, Nextel Brazil had accrued liabilities of $73.9 million and $70.9 million, respectively, related to contingencies, all of which were classified in accrued contingencies reported as a component of other long-term liabilities, of which $10.7 million and $11.2 million related to unasserted claims, respectively. We currently estimate the range of reasonably possible losses related to matters for which Nextel Brazil has not accrued liabilities, as they are not deemed probable, to be between $435.4 million and $439.4 million as of March 31, 2014. We evaluate the likelihood of probable and reasonably possible losses, if any, related to all known contingencies on an ongoing basis. As a result, future increases or decreases to our accrued liabilities may be necessary and will be recorded in the period when such amounts are determined to be probable and reasonably estimable.
	Legal Proceedings.
	Federal Securities Litigation. On March 4, 2014, a purported class action lawsuit was filed against the Company, NII Capital Corp. and certain of the Company’s current and former directors and executive officers in the United States District Court for the Eastern District of Virginia. The class action lawsuit was captioned Iron Workers District Council of New England Pension Fund and State-Boston Retirement System v. NII Holdings, Inc., et al. and generally alleges that the defendants made false or misleading statements or concealed material adverse information about the Company’s financial condition in violation of Sections 11, 12 and 15 of the Securities Act of 1933 and Section 10(b), Rule 10b-5 and Section 20(a) of the Securities Exchange Act of 1934. The purported lead plaintiffs represent a class of persons who purchased or otherwise acquired the Company’s securities between February 25, 2010 and February 27, 2014 and are seeking class certification and unspecified damages, fees and injunctive relief. The Company and the named individuals intend to vigorously defend themselves in this matter.
	In addition, we are subject to claims and legal actions that may arise in the ordinary course of business. We do not believe that any of these pending claims or legal actions will have a material effect on our business, financial condition, results of operations or cash flows.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The realization of deferred tax assets is dependent on the generation of future taxable income sufficient to realize our tax loss carryforwards and other tax deductions. Valuation allowances are required to be recognized on deferred tax assets unless it is determined that it is “more-likely-than-not” that the asset will be realized. In 2013, except for Argentina and certain subsidiaries in Mexico, we recorded full valuation allowances on the deferred tax assets of our foreign operating companies, our U.S. subsidiaries and our foreign holding companies due to substantial negative evidence such as the recent history of cumulative losses and the projected losses for 2014 and subsequent years. We maintained this same valuation allowance position for the first quarter of 2014. As a result, the valuation allowance on our deferred tax assets increased by $121.6 million for the three-month period ended March 31, 2014. Our valuation allowance was $4.6 billion and $4.5 billion as of March 31, 2014 and December 31, 2013, respectively. We do not anticipate that we will recognize significant tax benefits with respect to our deferred tax assets until our facts justify the recognition of such benefits.
	For the three months ended March 31, 2014 and 2013, we recorded a consolidated income tax provision of $5.0 million and $21.6 million, respectively. The $16.6 million decrease in the consolidated income tax provision is primarily due to a decrease in our current tax expense caused by an increase in losses from continuing operations before income tax provision in the markets and reductions in withholding taxes on intercompany charges. Further, for the reasons discussed above, we were not able to recognize a deferred tax benefit for pre-tax losses recognized in Brazil, most of our Mexico subsidiaries, Chile, the U.S. and our foreign holding companies in 2014.

Segment_Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment Reporting	'
	Segment Reporting
	We have determined that our reportable segments are those that are based on our method of internal reporting, which disaggregates our business by geographic location. We evaluate performance of these segments and provide resources to them based on operating income before depreciation, amortization and impairment and restructuring charges, which we refer to as segment earnings. Our reportable segments are: (1) Brazil, (2) Mexico, (3) Argentina, and (4) Chile.
		Brazil			Mexico			Argentina		Chile			Corporate and Eliminations			Consolidated
		(in thousands)
	Three Months Ended March 31, 2014
	Operating revenues	$	461,224		$	381,844		$	112,680	$	14,432		$	34		$	970,214
	Segment (losses) earnings	$	(29,145	)	$	(12,540	)	$	26,978	$	(24,749	)	$	(44,475	)	$	(83,931	)
	Less:
	Impairment and restructuring benefits															2,527
	Depreciation and amortization															(157,676		)
	Foreign currency transaction losses, net															(7,186		)
	Interest expense and other, net															(124,794		)
	Loss from continuing operations before income tax provision															$	(371,060	)
	Capital expenditures	$	67,688		$	38,522		$	5,252	$	602		$	5,750		$	117,814
	Three Months Ended March 31, 2013
	Operating revenues	$	635,872		$	514,014		$	167,024	$	25,264		$	(11,335	)	$	1,330,839
	Segment earnings (losses)	$	157,643		$	101,229		$	52,341	$	(34,495	)	$	(48,805	)	$	227,913
	Less:
	Impairment and restructuring charges															(124,607		)
	Depreciation and amortization															(182,822		)
	Foreign currency transaction gains, net															23,225
	Interest expense and other, net															(107,911		)
	Loss from continuing operations before income tax provision															$	(164,202	)
	Capital expenditures	$	92,908		$	52,465		$	1,493	$	3,113		$	2,752		$	152,731
	31-Mar-14
	Identifiable assets	$	3,625,452		$	2,564,613		$	386,760	$	156,730		$	1,456,110		$	8,189,665
	31-Dec-13
	Identifiable assets	$	3,705,642		$	2,695,091		$	451,041	$	169,062		$	1,659,118		$	8,679,954

Condensed_Consolidating_Financ

Condensed Consolidating Financial Statements	3 Months Ended
	Mar. 31, 2014
Condensed Consolidating Financial Statements	'
Condensed Consolidating Financial Statements	'
	Condensed Consolidating Financial Statements
	In 2011, we issued $1.45 billion in aggregate principal amount of our 7.625% senior notes due 2021. In addition, during 2009, we issued senior notes totaling $1.3 billion in aggregate principal amount comprised of our 10.0% senior notes due 2016 and our 8.875% senior notes due 2019. All of these senior notes are senior unsecured obligations of NII Capital Corp., our wholly-owned domestic subsidiary, and are guaranteed on a senior unsecured basis by NII Holdings and all of its current and future first tier and domestic restricted subsidiaries, other than NII Capital Corp. No foreign subsidiaries will guarantee the senior notes unless they are first tier subsidiaries of NII Holdings. These guarantees are full and unconditional, as well as joint and several.
	In connection with the issuance of the senior notes and the guarantees thereof, we are required to provide certain condensed consolidating financial information. Included in the tables below are condensed consolidating balance sheets as of March 31, 2014 and December 31, 2013, as well as condensed consolidating statements of comprehensive loss for the three months ended March 31, 2014 and 2013 and condensed consolidating statements of cash flows for the three months ended March 31, 2014 and 2013, of: (a) the parent company, NII Holdings, Inc.; (b) the subsidiary issuer, NII Capital Corp.; (c) the guarantor subsidiaries on a combined basis; (d) the non-guarantor subsidiaries on a combined basis; (e) consolidating adjustments; and (f) NII Holdings, Inc. and subsidiaries on a consolidated basis.
	In connection with the preparation of our condensed consolidated financial statements for the first quarter of 2014, we made certain immaterial adjustments to our condensed consolidating statement of cash flows for the three months ended March 31, 2013 to reflect the proper classification of cash flows related to intercompany transactions in which the parent company made direct payments on behalf of certain guarantor subsidiaries. This condensed consolidating financial information is provided in connection with outstanding senior notes issued by NII Capital Corp. that are fully and unconditionally guaranteed by a group of our subsidiaries. These adjustments did not affect the assets available to the group of subsidiaries guaranteeing our senior notes; did not change the net decrease in cash and cash equivalents for the parent company, the issuer, the guarantor subsidiaries or the non-guarantor subsidiaries; and had no impact on consolidated amounts. The substantial majority of these adjustments had the effect of a) decreasing the parent company's net cash outflows from operating activities and increasing the parent company's net cash outflows from investing activities by $14.1 million; and b) increasing the guarantors' net cash outflows from operating activities and increasing the guarantor's net cash inflows from financing activities by $14.5 million.
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of March 31, 2014
		NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
		Inc. (Parent)			Corp. (Issuer)(1)			Subsidiaries(2)			Guarantor			Adjustments
											Subsidiaries
		(in thousands)
	ASSETS
	Current assets
	Cash and cash equivalents	$	257,829		$	—		$	14,888		$	1,027,052		$	—		$	1,299,769
	Short-term investments	—			—			—			305,208			—			305,208
	Accounts receivable, net	—			—			431			501,019			—			501,450
	Short-term intercompany receivables	34,196			92,206			86,053			5,768			(218,223		)	—
	Handset and accessory inventory	—			—			—			411,058			—			411,058
	Deferred income taxes, net	—			—			1,107			109,526			—			110,633
	Prepaid expenses and other	6,152			—			14,739			541,523			—			562,414
	Total current assets	298,177			92,206			117,218			2,901,154			(218,223		)	3,190,532
	Property, plant and equipment, net	—			—			130,286			3,264,743			—			3,395,029
	Investments in and advances to	1,636,058			1,217,111			1,271,936			—			(4,125,105		)	—
	affiliates
	Intangible assets, net	18,000			—			—			995,124			—			1,013,124
	Deferred income taxes, net	15,821			—			—			28,178			(15,821		)	28,178
	Long-term intercompany receivables	1,458,283			3,782,566			707,192			1,354			(5,949,395		)	—
	Other assets	29,020			30,963			6,018			496,801			—			562,802
	Total assets	$	3,455,359		$	5,122,846		$	2,232,650		$	7,687,354		$	(10,308,544	)	$	8,189,665
	LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
	Current liabilities
	Accounts payable	$	—		$	—		$	1,630		$	314,482		$	—		$	316,112
	Short-term intercompany payables	465,567			119,098			1,483,031			256,603			(2,324,299		)	—
	Accrued expenses and other	—			78,224			16,885			762,265			(197		)	857,177
	Deferred revenues	—			—			—			119,004			—			119,004
	Current portion of long-term debt	—			—			1,966			101,569			—			103,535
	Deposits related to 2013 sale of towers	—			—			—			715,782			—			715,782
	Total current liabilities	465,567			197,322			1,503,512			2,269,705			(2,324,496		)	2,111,610
	Long-term debt	23			2,730,389			33,307			2,985,571			—			5,749,290
	Deferred revenues	—			—			—			10,558			—			10,558
	Deferred income tax liabilities	1			2,950			15,259			94,919			(15,821		)	97,308
	Long-term intercompany payables	2,968,122			—			10,390			865,961			(3,844,473		)	—
	Other long-term liabilities	30,411			—			10,549			188,704			—			229,664
	Total liabilities	3,464,124			2,930,661			1,573,017			6,415,418			(6,184,790		)	8,198,430
	Total stockholders’ (deficit) equity	(8,765		)	2,192,185			659,633			1,271,936			(4,123,754		)	(8,765		)
	Total liabilities and stockholders’ (deficit) equity	$	3,455,359		$	5,122,846		$	2,232,650		$	7,687,354		$	(10,308,544	)	$	8,189,665
	_______________________________________
	-1	NII Capital Corp. is the issuer of our 7.625% senior notes due 2021, our 10.0% senior notes due 2016 and our 8.875% senior notes due 2019.
	-2	Represents our subsidiaries that have provided guarantees of the obligations of NII Capital Corp. under our 7.625% senior notes due 2021, our 10.0% senior notes due 2016 and our 8.875% senior notes due 2019.
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of December 31, 2013
		NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
		Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
											Subsidiaries
		(in thousands)
	ASSETS
	Current assets
	Cash and cash equivalents	$	356,314		$	—		$	5,586		$	1,371,883		$	—		$	1,733,783
	Short-term investments	—			—			—			585,760			—			585,760
	Accounts receivable, net	—			—			627			521,936			—			522,563
	Short-term intercompany	31,803			129,810			72,595			4,779			(238,987		)	—
	receivables
	Handset and accessory inventory	—			—			—			342,585			—			342,585
	Deferred income taxes, net	—			—			1,145			126,250			—			127,395
Prepaid expenses and other	6,832			—			7,914			421,354			—			436,100
Total current assets	394,949			129,810			87,867			3,374,547			(238,987		)	3,748,186
Property, plant and equipment,	—			—			130,729			3,257,618			(287		)	3,388,060
net
Investments in and advances to	1,867,753			1,503,202			1,562,080			—			(4,933,035		)	—
affiliates
Intangible assets, net	18,000			—			—			975,669			—			993,669
Deferred income taxes, net	16,025			—			—			26,716			(16,028		)	26,713
Long-term intercompany receivables	1,474,658			3,714,760			701,680			1,354			(5,892,452		)	—
Other assets	29,381			32,556			15,383			446,006			—			523,326
Total assets	$	3,800,766		$	5,380,328		$	2,497,739		$	8,081,910		$	(11,080,789	)	$	8,679,954
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities
Accounts payable	$	—		$	—		$	727		$	368,329		$	—		$	369,056
Short-term intercompany payables	464,798			132,007			1,485,835			159,322			(2,241,962		)	—
Accrued expenses and other	—			59,490			26,089			887,177			(222		)	972,534
Deferred revenues	—			—			—			128,148			—			128,148
Current portion of long-term debt	—			—			1,871			94,968			—			96,839
Deposits related to 2013 sale of towers	—			—			—			720,013			—			720,013
Total current liabilities	464,798			191,497			1,514,522			2,357,957			(2,242,184		)	2,286,590
Long-term debt	23			2,729,321			33,864			2,933,424			—			5,696,632
Deferred revenues	—			—			—			11,238			—			11,238
Deferred income tax liabilities	3			2,950			15,384			106,682			(16,028		)	108,991
Long-term intercompany	2,950,226			—			10,390			929,990			(3,890,606		)	—
payables
Other long-term liabilities	30,329			—			10,248			180,539			—			221,116
Total liabilities	3,445,379			2,923,768			1,584,408			6,519,830			(6,148,818		)	8,324,567
Total stockholders’ equity	355,387			2,456,560			913,331			1,562,080			(4,931,971		)	355,387
Total liabilities and stockholders’ equity	$	3,800,766		$	5,380,328		$	2,497,739		$	8,081,910		$	(11,080,789	)	$	8,679,954
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE LOSS
For the Three Months Ended March 31, 2014
	NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
	Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
										Subsidiaries
	(in thousands)
Operating revenues	$	—		$	—		$	824		$	970,158		$	(768	)	$	970,214
Operating expenses
Cost of revenues (exclusive of	—			—			—			603,388			—			603,388
depreciation and amortization
included below)
Selling, general and administrative	803			—			43,623			408,748			(2,417		)	450,757
Impairment and restructuring charges	—			—			(1,965		)	(562		)	—			(2,527		)
Management fee and other	—			—			(15,389		)	16,668			(1,279		)	—
Depreciation and amortization	—			—			6,027			151,649			—			157,676
	803			—			32,296			1,179,891			(3,696		)	1,209,294
Operating loss	(803		)	—			(31,472		)	(209,733		)	2,928			(239,080		)
Other income (expense)
Interest expense, net	(141		)	(60,625		)	(235		)	(79,211		)	—			(140,212		)
Intercompany interest expense	(57,896		)	—			(17		)	(12,578		)	70,491			—
Interest income	102			—			3			20,003			—			20,108
Intercompany interest income	81			70,202			206			2			(70,491		)	—
Foreign currency transaction losses, net	—			—			—			(7,186		)	—			(7,186		)
Equity in loss of affiliates	(327,550		)	(298,731		)	(297,709		)	—			923,990			—
Other income (expense), net	2,928			—			—			(4,977		)	(2,641		)	(4,690		)
	(382,476		)	(289,154		)	(297,752		)	(83,947		)	921,349			(131,980		)
Loss from continuing operations before income tax benefit (provision)	(383,279		)	(289,154		)	(329,224		)	(293,680		)	924,277			(371,060		)
Income tax benefit (provision)	7,200			(3,640		)	(4,550		)	(4,050		)	—			(5,040		)
Net loss from continuing operations	(376,079		)	(292,794		)	(333,774		)	(297,730		)	924,277			(376,100		)
Income from discontinued operations, net of income taxes	—			—			—			21			—			21
Net loss	$	(376,079	)	$	(292,794	)	$	(333,774	)	$	(297,709	)	$	924,277		$	(376,079	)
Comprehensive loss, net of income taxes
Foreign currency translation	$	8,419		$	8,159		$	8,159		$	8,159		$	(24,477	)	$	8,419
adjustment
Other	(569		)	(569		)	(569		)	(569		)	1,707			(569		)
Other comprehensive income	7,850			7,590			7,590			7,590			(22,770		)	7,850
Net loss	(376,079		)	(292,794		)	(333,774		)	(297,709		)	924,277			(376,079		)
Total comprehensive loss	$	(368,229	)	$	(285,204	)	$	(326,184	)	$	(290,119	)	$	901,507		$	(368,229	)
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE (LOSS) INCOME
For the Three Months Ended March 31, 2013
	NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
	Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
										Subsidiaries
	(in thousands)
Operating revenues	$	—		$	—		$	768		$	1,330,839		$	(768	)	$	1,330,839
Operating expenses
Cost of revenues (exclusive of	—			—			—			605,394			—			605,394
depreciation and amortization
included below)
Selling, general and administrative	791			—			46,401			452,004			(1,664		)	497,532
Impairment and restructuring charges	—			—			77,000			47,607			—			124,607
Management fee and other	—			—			(28,699		)	38,309			(9,610		)	—
Depreciation and amortization	—			—			10,397			172,425			—			182,822
	791			—			105,099			1,315,739			(11,274		)	1,410,355
Operating (loss) income	(791		)	—			(104,331		)	15,100			10,506			(79,516		)
Other income (expense)
Interest expense, net	(140		)	(59,316		)	(410		)	(49,796		)	—			(109,662		)
Intercompany interest expense	(57,896		)	—			(12		)	(13,448		)	71,356			—
Interest income	309			—			4			6,192			—			6,505
Intercompany interest income	1,118			70,203			35			—			(71,356		)	—
Foreign currency transaction gains, net	—			—			—			23,225			—			23,225
Equity in loss of affiliates	(161,046		)	(48,737		)	(47,447		)	—			257,230			—
Other income (expense), net	10,506			—			(2		)	(4,752		)	(10,506		)	(4,754		)
	(207,149		)	(37,850		)	(47,832		)	(38,579		)	246,724			(84,686		)
Loss from continuing operations before income tax benefit (provision)	(207,940		)	(37,850		)	(152,163		)	(23,479		)	257,230			(164,202		)
Income tax benefit (provision)	436			(3,395		)	(2,605		)	(2,284		)	(13,770		)	(21,618		)
Net loss from continuing operations	(207,504		)	(41,245		)	(154,768		)	(25,763		)	243,460			(185,820		)
Loss from discontinued operations, net of income taxes	—			—			—			(21,684		)	—			(21,684		)
Net loss	$	(207,504	)	$	(41,245	)	$	(154,768	)	$	(47,447	)	$	243,460		$	(207,504	)
Comprehensive (loss) income, net of income taxes
Foreign currency translation	$	77,453		$	77,640		$	77,640		$	77,640		$	(232,920	)	$	77,453
adjustment
Other	(1,925		)	(1,925		)	(1,925		)	(1,925		)	5,775			(1,925		)
Other comprehensive income	75,528			75,715			75,715			75,715			(227,145		)	75,528
Net loss	(207,504		)	(41,245		)	(154,768		)	(47,447		)	243,460			(207,504		)
Total comprehensive (loss) income	$	(131,976	)	$	34,470		$	(79,053	)	$	28,268		$	16,315		$	(131,976	)
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the Three Months Ended March 31, 2014
	NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
	Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
										Subsidiaries
	(in thousands)
Cash flows from operating activities:
Net loss	$	(376,079	)	$	(292,794	)	$	(333,774	)	$	(297,709	)	$	924,277		$	(376,079	)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities	336,162			293,000			286,773			(101,159		)	(924,277		)	(109,501		)
Total operating cash (used in) provided by continuing operations	(39,917		)	206			(47,001		)	(398,868		)	—			(485,580		)
Total operating cash provided by discontinued operations	—			—			—			21			—			21
Net cash (used in) provided by operating activities	(39,917		)	206			(47,001		)	(398,847		)	—			(485,559		)
Cash flows from investing activities:
Capital expenditures	—			—			(1,700		)	(180,627		)	—			(182,327		)
Purchases of long-term and short-	—			—			—			(203,232		)	—			(203,232		)
term investments
Proceeds from sales of long-term	—			—			—			510,117			—			510,117
and short-term investments
Investments in subsidiaries	(58,566		)	(216		)	—			—			58,782			—
Payments for purchases of licenses and other	—			—			—			(34,119		)	—			(34,119		)
Total investing cash (used in) provided by continuing operations	(58,566		)	(216		)	(1,700		)	92,139			58,782			90,439
Total investing cash used in discontinued operations	—			—			—			(30		)	—			(30		)
Net cash (used in) provided by investing activities	(58,566		)	(216		)	(1,700		)	92,109			58,782			90,409
Cash flows from financing activities:
Borrowings under equipment financing facilities and other	—			—			—			14,691			—			14,691
Repayments under bank loans, equipment financing and other	(2		)	—			(463		)	(18,866		)	—			(19,331		)
Capital contributions	—			10			58,466			306			(58,782		)	—
Net cash flows (used in) provided by financing activities	(2		)	10			58,003			(3,869		)	(58,782		)	(4,640		)
Effect of exchange rate changes	—			—			—			(34,224		)	—			(34,224		)
on cash and cash equivalents
Net (decrease) increase in cash and	(98,485		)	—			9,302			(344,831		)	—			(434,014		)
cash equivalents
Cash and cash equivalents,	356,314			—			5,586			1,371,883			—			1,733,783
beginning of period
Cash and cash equivalents, end of	$	257,829		$	—		$	14,888		$	1,027,052		$	—		$	1,299,769
period
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the Three Months Ended March 31, 2013
	NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
	Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
										Subsidiaries
	(in thousands)
Cash flows from operating activities:
Net loss	$	(207,504	)	$	(41,245	)	$	(154,768	)	$	(47,447	)	$	243,460		$	(207,504	)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities	167,521			42,118			126,563			(14,223		)	(243,060		)	78,919
Total operating cash (used in) provided by continuing operations	(39,983		)	873			(28,205		)	(61,670		)	400			(128,585		)
Total operating cash used in discontinued operations	—			—			—			(14,045		)	—			(14,045		)
Net cash (used in) provided by operating activities	(39,983		)	873			(28,205		)	(75,715		)	400			(142,630		)
Cash flows from investing activities:
Capital expenditures	—			—			(8,305		)	(233,083		)	(400		)	(241,788		)
Purchases of long-term and short-	—			—			—			(176,309		)	—			(176,309		)
term investments
Proceeds from sales of short-term	—			—			—			342,819			—			342,819
investments
Investments in subsidiaries	(38,484		)	(873		)	—			—			39,357			—
Payment for purchases of licenses and other	—			—			—			(19,114		)	—			(19,114		)
Total investing cash used in continuing operations	(38,484		)	(873		)	(8,305		)	(85,687		)	38,957			(94,392		)
Total investing cash used in discontinued operations	—			—			—			(27,060		)	—			(27,060		)
Net cash used in investing	(38,484		)	(873		)	(8,305		)	(112,747		)	38,957			(121,452		)
activities
Cash flows from financing activities:
Borrowings under equipment financing facilities	—			—			—			41,780			—			41,780
Proceeds from issuance of senior notes	—			—			—			750,000			—			750,000
Repayments under bank loans, equipment financing and other	—			—			(4,087		)	(24,070		)	—			(28,157		)
Capital contributions	—			—			38,484			873			(39,357		)	—
Total financing cash provided by continuing operations	—			—			34,397			768,583			(39,357		)	763,623
Total financing cash used in discontinued operations	—			—			—			(779		)	—			(779		)
Net cash provided by financing activities	—			—			34,397			767,804			(39,357		)	762,844
Effect of exchange rate changes	—			—			—			2,198			—			2,198
on cash and cash equivalents
Change in cash and cash equivalents held for sale	—			—			—			3,965			—			3,965
Net (decrease) increase in cash and cash equivalents	(78,467		)	—			(2,113		)	585,505			—			504,925
Cash and cash equivalents,	735,022			—			6,469			629,682			—			1,371,173
beginning of period
Cash and cash equivalents, end of	$	656,555		$	—		$	4,356		$	1,215,187		$	—		$	1,876,098
period

Basis_of_Presentation_Accounti

Basis of Presentation (Accounting Policies)	3 Months Ended
	Mar. 31, 2014
Summary of Operations and Significant Accounting Policies [Abstract]	'
New Accounting Pronouncements, Policy [Policy Text Block]	'
	New Accounting Pronouncements.   There were no new accounting standards issued during the three months ended March 31, 2014 that materially impacted our condensed consolidated financial statements or could materially impact our financial statements or related disclosures in a future period.
Revenue-Based Taxes	'
	Revenue-Based Taxes.  We record revenue-based taxes and other excise taxes on a gross basis as a component of both service and other revenues and selling, general and administrative expenses in our condensed consolidated financial statements. For the three months ended March 31, 2014 and 2013, we recognized $31.1 million and $48.4 million, respectively, in revenue-based taxes and other excise taxes
Net Income Per Common Share, Basic and Diluted	'
	Net Loss Per Common Share, Basic and Diluted.  Basic net loss per common share is computed by dividing adjusted net loss attributable to common shares by the weighted average number of common shares outstanding for the period. Diluted net loss per common share reflects the potential dilution of securities that could participate in our earnings, but not securities that are antidilutive, including stock options with an exercise price greater than the average market price of our common stock.
	Our unvested restricted stock awards, or RSAs, contain non-forfeitable rights to dividends, whether paid or unpaid. As a result, our RSAs are considered participating securities because their holders have the right to participate in earnings with common stockholders. We use the two-class method to allocate net income between common shares and other participating securities.
	As presented for the three months ended March 31, 2014 and 2013, our calculation of diluted net loss per common share is based on the weighted average number of common shares outstanding during those periods and does not include other potential common shares, including shares issuable upon the potential exercise of stock options under our stock-based employee compensation plans or restricted common shares issued under those plans since their effect would have been antidilutive to our net loss per common share for those periods. Furthermore, for the three months ended March 31, 2014 and 2013, we did not include 47.4 million and 12.4 million stock options, respectively, and 33.6 million and 27.7 million restricted stock units, respectively, in our calculation of diluted net loss per common share because their effect would have been antidilutive to our net loss per common share for those periods.

Basis_of_Presentation_Tables

Basis of Presentation (Tables)	3 Months Ended
	Mar. 31, 2014
Summary of Operations and Significant Accounting Policies [Abstract]	'
Schedule of Accumulated Other Comprehensive Loss	'
	Accumulated Other Comprehensive Loss.    As of March 31, 2014 and December 31, 2013, the tax impact on our accumulated other comprehensive loss was not material. The components of our accumulated other comprehensive loss, net of taxes, are as follows:
		31-Mar-14			31-Dec-13
		(in thousands)
	Cumulative foreign currency translation adjustment	$	(942,852	)	$	(951,271	)
	Other	(5,375		)	(4,806		)
		$	(948,227	)	$	(956,077	)
Supplemental Cash Flow Information	'
	Supplemental Cash Flow Information.
		Three Months Ended March 31,
		2014			2013
		(in thousands)
	Capital expenditures
	Cash paid for capital expenditures, including capitalized interest on	$	182,327		$	241,788
	property, plant and equipment
	Change in capital expenditures accrued and unpaid or financed, including	(64,513		)	(89,057		)
	accreted interest capitalized
		$	117,814		$	152,731
	Interest costs
	Interest expense, net	$	140,212		$	109,662
	Interest capitalized	12,722			23,620
		$	152,934		$	133,282
	For the three months ended March 31, 2014, we had $45.2 million in non-cash financing, primarily related to borrowings under our equipment financing facility in Mexico. For the three months ended March 31, 2013, we had $24.1 million in non-cash financing, primarily related to borrowings under our equipment financing facility in Mexico and co-location capital lease obligations on our communication towers in Brazil and Mexico.

Discontinued_Operations_Tables

Discontinued Operations (Tables)	3 Months Ended
	Mar. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]	'
		Three Months Ended March 31,
		2014		2013
	Operating revenues	$	—	$	82,557
	Operating expenses	—		(105,093		)
	Other income, net	—		114
	Loss before income tax benefit	—		(22,422		)
	Income tax benefit	—		738
		—		(21,684		)
	Income on disposal of Nextel Peru	21		—
	Income (loss) from discontinued operations, net of income taxes	$	21	$	(21,684	)

Impairment_and_Restructuring_C1

Impairment and Restructuring Charges (Tables)	3 Months Ended
	Mar. 31, 2014
Restructuring and Related Activities [Abstract]	'
Asset Impairment [Table Text Block]	'
	Total impairment and restructuring (benefits) charges by operating segment for the three months ended March 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended
		March 31,
		2014			2013
	Brazil	$	—		$	23,814
	Mexico	(562		)	19,655
	Argentina	—			3,717
	Chile	—			33,921
	Corporate	(1,965		)	43,500
	Total impairment and restructuring (benefits) charges	$	(2,527	)	$	124,607

Balance_Sheet_Details_Tables

Balance Sheet Details (Tables)	3 Months Ended
	Mar. 31, 2014
Balance Sheet Details [Abstract]	'
Schedule of Prepaid Assets and Other Disclosure [Table Text Block]	'
	Prepaid Expenses and Other.
	The components of our prepaid expenses and other are as follows:
		March 31,			December 31,
		2014			2013
		(in thousands)
	Value-added taxes	$	230,375		$	237,119
	Spectrum fees	101,164			1,109
	Income taxes	61,215			59,054
	Other prepaid assets	115,327			96,312
	Other current assets	54,333			42,506
		$	562,414		$	436,100
Property, Plant and Equipment [Table Text Block]	'
	Property, Plant and Equipment, Net.
	The components of our property, plant and equipment are as follows:
		March 31,			December 31,
		2014			2013
		(in thousands)
	Land	$	9,707		$	9,652
	Building and leasehold improvements	193,438			193,376
	Digital mobile network equipment, communication towers and network software	4,981,008			4,829,134
	Office equipment, furniture and fixtures and other	806,329			785,242
	Corporate aircraft capital lease	43,374			42,747
	Less: Accumulated depreciation and amortization	(3,146,058		)	(2,995,667		)
		2,887,798			2,864,484
	Construction in progress	507,231			523,576
		$	3,395,029		$	3,388,060
Schedule of Finite-Lived Intangible Assets [Table Text Block]	'
	Intangible Assets, Net.
	Our intangible assets include the following:
		31-Mar-14								31-Dec-13
		Gross Carrying			Accumulated			Net Carrying		Gross Carrying		Accumulated			Net Carrying
		Value			Amortization			Value		Value		Amortization			Value
								(in thousands)
	Amortizable intangible assets:
	Licenses	$	1,259,950		$	(264,826	)	$	995,124	$	1,220,990	$	(245,321	)	$	975,669
	As of both March 31, 2014 and December 31, 2013, the balance of our indefinite lived intangible assets was $18.0 million.
Schedule of Accrued Liabilities [Table Text Block]	'
	Accrued Expenses and Other.
	The components of our accrued expenses and other are as follows:
		March 31,			December 31,
		2014			2013
		(in thousands)
	Capital expenditures	$	226,283		$	290,484
	Accrued interest	115,671			128,509
	Non-income based taxes	95,710			114,360
	Payroll related items and commissions	93,232			92,852
	Network system and information technology	91,572			92,109
	Other	234,709			254,220
		$	857,177		$	972,534

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2014
Debt [Abstract]	'
Debt	'
		31-Mar-14			31-Dec-13
		(in thousands)
	NII Capital Corp. senior notes, net	$	2,730,388		$	2,729,321
	NII International Telecom, S.C.A. senior notes, net	1,609,626			1,609,962
	Bank loans	446,195			444,268
	Brazil equipment financing	366,937			352,725
	Mexico equipment financing	346,064			300,832
	Mexico capital lease and tower financing obligations	190,954			194,227
	Brazil capital lease and tower financing obligations	125,326			122,499
	Corporate aircraft capital lease	35,273			35,736
	Other	2,062			3,901
	Total debt	5,852,825			5,793,471
	Less: current portion	(103,535		)	(96,839		)
		$	5,749,290		$	5,696,632

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements	'
Debt	'
	The carrying amounts and estimated fair values of our long-term debt instruments are as follows:
		31-Mar-14				31-Dec-13
		Carrying		Estimated		Carrying		Estimated
		Amount		Fair Value		Amount		Fair Value
		(in thousands)
	NII Capital Corp. senior notes, net	$	2,730,388	$	971,125	$	2,729,321	$	1,227,950
	NII International Telecom, S.C.A. senior notes, net	1,609,626		1,110,380		1,609,962		1,271,370
	Bank loans and other	448,257		351,695		448,169		373,796
	Equipment financing	713,001		650,214		653,557		620,173
		$	5,501,272	$	3,083,414	$	5,441,009	$	3,493,289

Segment_Reporting_Tables

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment Reporting Information	'
		Brazil			Mexico			Argentina		Chile			Corporate and Eliminations			Consolidated
		(in thousands)
	Three Months Ended March 31, 2014
	Operating revenues	$	461,224		$	381,844		$	112,680	$	14,432		$	34		$	970,214
	Segment (losses) earnings	$	(29,145	)	$	(12,540	)	$	26,978	$	(24,749	)	$	(44,475	)	$	(83,931	)
	Less:
	Impairment and restructuring benefits															2,527
	Depreciation and amortization															(157,676		)
	Foreign currency transaction losses, net															(7,186		)
	Interest expense and other, net															(124,794		)
	Loss from continuing operations before income tax provision															$	(371,060	)
	Capital expenditures	$	67,688		$	38,522		$	5,252	$	602		$	5,750		$	117,814
	Three Months Ended March 31, 2013
	Operating revenues	$	635,872		$	514,014		$	167,024	$	25,264		$	(11,335	)	$	1,330,839
	Segment earnings (losses)	$	157,643		$	101,229		$	52,341	$	(34,495	)	$	(48,805	)	$	227,913
	Less:
	Impairment and restructuring charges															(124,607		)
	Depreciation and amortization															(182,822		)
	Foreign currency transaction gains, net															23,225
	Interest expense and other, net															(107,911		)
	Loss from continuing operations before income tax provision															$	(164,202	)
	Capital expenditures	$	92,908		$	52,465		$	1,493	$	3,113		$	2,752		$	152,731
	31-Mar-14
	Identifiable assets	$	3,625,452		$	2,564,613		$	386,760	$	156,730		$	1,456,110		$	8,189,665
	31-Dec-13
	Identifiable assets	$	3,705,642		$	2,695,091		$	451,041	$	169,062		$	1,659,118		$	8,679,954

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Statements (Tables)	3 Months Ended
	Mar. 31, 2014
Condensed Consolidating Financial Statements	'
Condensed Consolidating Balance Sheet	'
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of March 31, 2014
		NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
		Inc. (Parent)			Corp. (Issuer)(1)			Subsidiaries(2)			Guarantor			Adjustments
											Subsidiaries
		(in thousands)
	ASSETS
	Current assets
	Cash and cash equivalents	$	257,829		$	—		$	14,888		$	1,027,052		$	—		$	1,299,769
	Short-term investments	—			—			—			305,208			—			305,208
	Accounts receivable, net	—			—			431			501,019			—			501,450
	Short-term intercompany receivables	34,196			92,206			86,053			5,768			(218,223		)	—
	Handset and accessory inventory	—			—			—			411,058			—			411,058
	Deferred income taxes, net	—			—			1,107			109,526			—			110,633
	Prepaid expenses and other	6,152			—			14,739			541,523			—			562,414
	Total current assets	298,177			92,206			117,218			2,901,154			(218,223		)	3,190,532
	Property, plant and equipment, net	—			—			130,286			3,264,743			—			3,395,029
	Investments in and advances to	1,636,058			1,217,111			1,271,936			—			(4,125,105		)	—
	affiliates
	Intangible assets, net	18,000			—			—			995,124			—			1,013,124
	Deferred income taxes, net	15,821			—			—			28,178			(15,821		)	28,178
	Long-term intercompany receivables	1,458,283			3,782,566			707,192			1,354			(5,949,395		)	—
	Other assets	29,020			30,963			6,018			496,801			—			562,802
	Total assets	$	3,455,359		$	5,122,846		$	2,232,650		$	7,687,354		$	(10,308,544	)	$	8,189,665
	LIABILITIES AND STOCKHOLDERS’ (DEFICIT) EQUITY
	Current liabilities
	Accounts payable	$	—		$	—		$	1,630		$	314,482		$	—		$	316,112
	Short-term intercompany payables	465,567			119,098			1,483,031			256,603			(2,324,299		)	—
	Accrued expenses and other	—			78,224			16,885			762,265			(197		)	857,177
	Deferred revenues	—			—			—			119,004			—			119,004
	Current portion of long-term debt	—			—			1,966			101,569			—			103,535
	Deposits related to 2013 sale of towers	—			—			—			715,782			—			715,782
	Total current liabilities	465,567			197,322			1,503,512			2,269,705			(2,324,496		)	2,111,610
	Long-term debt	23			2,730,389			33,307			2,985,571			—			5,749,290
	Deferred revenues	—			—			—			10,558			—			10,558
	Deferred income tax liabilities	1			2,950			15,259			94,919			(15,821		)	97,308
	Long-term intercompany payables	2,968,122			—			10,390			865,961			(3,844,473		)	—
	Other long-term liabilities	30,411			—			10,549			188,704			—			229,664
	Total liabilities	3,464,124			2,930,661			1,573,017			6,415,418			(6,184,790		)	8,198,430
	Total stockholders’ (deficit) equity	(8,765		)	2,192,185			659,633			1,271,936			(4,123,754		)	(8,765		)
	Total liabilities and stockholders’ (deficit) equity	$	3,455,359		$	5,122,846		$	2,232,650		$	7,687,354		$	(10,308,544	)	$	8,189,665
	_______________________________________
	-1	NII Capital Corp. is the issuer of our 7.625% senior notes due 2021, our 10.0% senior notes due 2016 and our 8.875% senior notes due 2019.
	-2	Represents our subsidiaries that have provided guarantees of the obligations of NII Capital Corp. under our 7.625% senior notes due 2021, our 10.0% senior notes due 2016 and our 8.875% senior notes due 2019.
	CONDENSED CONSOLIDATING BALANCE SHEET
	As of December 31, 2013
		NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
		Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
											Subsidiaries
		(in thousands)
	ASSETS
	Current assets
	Cash and cash equivalents	$	356,314		$	—		$	5,586		$	1,371,883		$	—		$	1,733,783
	Short-term investments	—			—			—			585,760			—			585,760
	Accounts receivable, net	—			—			627			521,936			—			522,563
	Short-term intercompany	31,803			129,810			72,595			4,779			(238,987		)	—
	receivables
	Handset and accessory inventory	—			—			—			342,585			—			342,585
	Deferred income taxes, net	—			—			1,145			126,250			—			127,395
	Prepaid expenses and other	6,832			—			7,914			421,354			—			436,100
	Total current assets	394,949			129,810			87,867			3,374,547			(238,987		)	3,748,186
	Property, plant and equipment,	—			—			130,729			3,257,618			(287		)	3,388,060
	net
Investments in and advances to	1,867,753			1,503,202			1,562,080			—			(4,933,035		)	—
affiliates
Intangible assets, net	18,000			—			—			975,669			—			993,669
Deferred income taxes, net	16,025			—			—			26,716			(16,028		)	26,713
Long-term intercompany receivables	1,474,658			3,714,760			701,680			1,354			(5,892,452		)	—
Other assets	29,381			32,556			15,383			446,006			—			523,326
Total assets	$	3,800,766		$	5,380,328		$	2,497,739		$	8,081,910		$	(11,080,789	)	$	8,679,954
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities
Accounts payable	$	—		$	—		$	727		$	368,329		$	—		$	369,056
Short-term intercompany payables	464,798			132,007			1,485,835			159,322			(2,241,962		)	—
Accrued expenses and other	—			59,490			26,089			887,177			(222		)	972,534
Deferred revenues	—			—			—			128,148			—			128,148
Current portion of long-term debt	—			—			1,871			94,968			—			96,839
Deposits related to 2013 sale of towers	—			—			—			720,013			—			720,013
Total current liabilities	464,798			191,497			1,514,522			2,357,957			(2,242,184		)	2,286,590
Long-term debt	23			2,729,321			33,864			2,933,424			—			5,696,632
Deferred revenues	—			—			—			11,238			—			11,238
Deferred income tax liabilities	3			2,950			15,384			106,682			(16,028		)	108,991
Long-term intercompany	2,950,226			—			10,390			929,990			(3,890,606		)	—
payables
Other long-term liabilities	30,329			—			10,248			180,539			—			221,116
Total liabilities	3,445,379			2,923,768			1,584,408			6,519,830			(6,148,818		)	8,324,567
Total stockholders’ equity	355,387			2,456,560			913,331			1,562,080			(4,931,971		)	355,387
Total liabilities and stockholders’ equity	$	3,800,766		$	5,380,328		$	2,497,739		$	8,081,910		$	(11,080,789	)	$	8,679,954
Condensed Consolidating Statement Of Operations	'
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE LOSS
	For the Three Months Ended March 31, 2014
		NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
		Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
											Subsidiaries
		(in thousands)
	Operating revenues	$	—		$	—		$	824		$	970,158		$	(768	)	$	970,214
	Operating expenses
	Cost of revenues (exclusive of	—			—			—			603,388			—			603,388
	depreciation and amortization
	included below)
	Selling, general and administrative	803			—			43,623			408,748			(2,417		)	450,757
	Impairment and restructuring charges	—			—			(1,965		)	(562		)	—			(2,527		)
	Management fee and other	—			—			(15,389		)	16,668			(1,279		)	—
	Depreciation and amortization	—			—			6,027			151,649			—			157,676
		803			—			32,296			1,179,891			(3,696		)	1,209,294
	Operating loss	(803		)	—			(31,472		)	(209,733		)	2,928			(239,080		)
	Other income (expense)
	Interest expense, net	(141		)	(60,625		)	(235		)	(79,211		)	—			(140,212		)
	Intercompany interest expense	(57,896		)	—			(17		)	(12,578		)	70,491			—
	Interest income	102			—			3			20,003			—			20,108
	Intercompany interest income	81			70,202			206			2			(70,491		)	—
	Foreign currency transaction losses, net	—			—			—			(7,186		)	—			(7,186		)
	Equity in loss of affiliates	(327,550		)	(298,731		)	(297,709		)	—			923,990			—
	Other income (expense), net	2,928			—			—			(4,977		)	(2,641		)	(4,690		)
		(382,476		)	(289,154		)	(297,752		)	(83,947		)	921,349			(131,980		)
	Loss from continuing operations before income tax benefit (provision)	(383,279		)	(289,154		)	(329,224		)	(293,680		)	924,277			(371,060		)
	Income tax benefit (provision)	7,200			(3,640		)	(4,550		)	(4,050		)	—			(5,040		)
	Net loss from continuing operations	(376,079		)	(292,794		)	(333,774		)	(297,730		)	924,277			(376,100		)
	Income from discontinued operations, net of income taxes	—			—			—			21			—			21
	Net loss	$	(376,079	)	$	(292,794	)	$	(333,774	)	$	(297,709	)	$	924,277		$	(376,079	)
	Comprehensive loss, net of income taxes
	Foreign currency translation	$	8,419		$	8,159		$	8,159		$	8,159		$	(24,477	)	$	8,419
	adjustment
	Other	(569		)	(569		)	(569		)	(569		)	1,707			(569		)
	Other comprehensive income	7,850			7,590			7,590			7,590			(22,770		)	7,850
	Net loss	(376,079		)	(292,794		)	(333,774		)	(297,709		)	924,277			(376,079		)
	Total comprehensive loss	$	(368,229	)	$	(285,204	)	$	(326,184	)	$	(290,119	)	$	901,507		$	(368,229	)
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE (LOSS) INCOME
	For the Three Months Ended March 31, 2013
		NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
		Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
											Subsidiaries
		(in thousands)
	Operating revenues	$	—		$	—		$	768		$	1,330,839		$	(768	)	$	1,330,839
	Operating expenses
	Cost of revenues (exclusive of	—			—			—			605,394			—			605,394
	depreciation and amortization
	included below)
	Selling, general and administrative	791			—			46,401			452,004			(1,664		)	497,532
	Impairment and restructuring charges	—			—			77,000			47,607			—			124,607
	Management fee and other	—			—			(28,699		)	38,309			(9,610		)	—
	Depreciation and amortization	—			—			10,397			172,425			—			182,822
		791			—			105,099			1,315,739			(11,274		)	1,410,355
	Operating (loss) income	(791		)	—			(104,331		)	15,100			10,506			(79,516		)
	Other income (expense)
	Interest expense, net	(140		)	(59,316		)	(410		)	(49,796		)	—			(109,662		)
	Intercompany interest expense	(57,896		)	—			(12		)	(13,448		)	71,356			—
	Interest income	309			—			4			6,192			—			6,505
	Intercompany interest income	1,118			70,203			35			—			(71,356		)	—
	Foreign currency transaction gains, net	—			—			—			23,225			—			23,225
	Equity in loss of affiliates	(161,046		)	(48,737		)	(47,447		)	—			257,230			—
	Other income (expense), net	10,506			—			(2		)	(4,752		)	(10,506		)	(4,754		)
	(207,149		)	(37,850		)	(47,832		)	(38,579		)	246,724			(84,686		)
Loss from continuing operations before income tax benefit (provision)	(207,940		)	(37,850		)	(152,163		)	(23,479		)	257,230			(164,202		)
Income tax benefit (provision)	436			(3,395		)	(2,605		)	(2,284		)	(13,770		)	(21,618		)
Net loss from continuing operations	(207,504		)	(41,245		)	(154,768		)	(25,763		)	243,460			(185,820		)
Loss from discontinued operations, net of income taxes	—			—			—			(21,684		)	—			(21,684		)
Net loss	$	(207,504	)	$	(41,245	)	$	(154,768	)	$	(47,447	)	$	243,460		$	(207,504	)
Comprehensive (loss) income, net of income taxes
Foreign currency translation	$	77,453		$	77,640		$	77,640		$	77,640		$	(232,920	)	$	77,453
adjustment
Other	(1,925		)	(1,925		)	(1,925		)	(1,925		)	5,775			(1,925		)
Other comprehensive income	75,528			75,715			75,715			75,715			(227,145		)	75,528
Net loss	(207,504		)	(41,245		)	(154,768		)	(47,447		)	243,460			(207,504		)
Total comprehensive (loss) income	$	(131,976	)	$	34,470		$	(79,053	)	$	28,268		$	16,315		$	(131,976	)
Condensed Consolidating Statement Of Cash Flows	'
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	For the Three Months Ended March 31, 2014
		NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
		Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
											Subsidiaries
		(in thousands)
	Cash flows from operating activities:
	Net loss	$	(376,079	)	$	(292,794	)	$	(333,774	)	$	(297,709	)	$	924,277		$	(376,079	)
	Adjustments to reconcile net loss to net cash (used in) provided by operating activities	336,162			293,000			286,773			(101,159		)	(924,277		)	(109,501		)
	Total operating cash (used in) provided by continuing operations	(39,917		)	206			(47,001		)	(398,868		)	—			(485,580		)
	Total operating cash provided by discontinued operations	—			—			—			21			—			21
	Net cash (used in) provided by operating activities	(39,917		)	206			(47,001		)	(398,847		)	—			(485,559		)
	Cash flows from investing activities:
	Capital expenditures	—			—			(1,700		)	(180,627		)	—			(182,327		)
	Purchases of long-term and short-	—			—			—			(203,232		)	—			(203,232		)
	term investments
	Proceeds from sales of long-term	—			—			—			510,117			—			510,117
	and short-term investments
	Investments in subsidiaries	(58,566		)	(216		)	—			—			58,782			—
	Payments for purchases of licenses and other	—			—			—			(34,119		)	—			(34,119		)
	Total investing cash (used in) provided by continuing operations	(58,566		)	(216		)	(1,700		)	92,139			58,782			90,439
	Total investing cash used in discontinued operations	—			—			—			(30		)	—			(30		)
	Net cash (used in) provided by investing activities	(58,566		)	(216		)	(1,700		)	92,109			58,782			90,409
	Cash flows from financing activities:
	Borrowings under equipment financing facilities and other	—			—			—			14,691			—			14,691
	Repayments under bank loans, equipment financing and other	(2		)	—			(463		)	(18,866		)	—			(19,331		)
	Capital contributions	—			10			58,466			306			(58,782		)	—
	Net cash flows (used in) provided by financing activities	(2		)	10			58,003			(3,869		)	(58,782		)	(4,640		)
	Effect of exchange rate changes	—			—			—			(34,224		)	—			(34,224		)
	on cash and cash equivalents
	Net (decrease) increase in cash and	(98,485		)	—			9,302			(344,831		)	—			(434,014		)
	cash equivalents
	Cash and cash equivalents,	356,314			—			5,586			1,371,883			—			1,733,783
	beginning of period
	Cash and cash equivalents, end of	$	257,829		$	—		$	14,888		$	1,027,052		$	—		$	1,299,769
	period
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	For the Three Months Ended March 31, 2013
		NII Holdings,			NII Capital			Guarantor			Non-			Consolidating			Consolidated
		Inc. (Parent)			Corp. (Issuer)			Subsidiaries			Guarantor			Adjustments
											Subsidiaries
		(in thousands)
	Cash flows from operating activities:
	Net loss	$	(207,504	)	$	(41,245	)	$	(154,768	)	$	(47,447	)	$	243,460		$	(207,504	)
	Adjustments to reconcile net loss to net cash (used in) provided by operating activities	167,521			42,118			126,563			(14,223		)	(243,060		)	78,919
	Total operating cash (used in) provided by continuing operations	(39,983		)	873			(28,205		)	(61,670		)	400			(128,585		)
	Total operating cash used in discontinued operations	—			—			—			(14,045		)	—			(14,045		)
	Net cash (used in) provided by operating activities	(39,983		)	873			(28,205		)	(75,715		)	400			(142,630		)
	Cash flows from investing activities:
	Capital expenditures	—			—			(8,305		)	(233,083		)	(400		)	(241,788		)
	Purchases of long-term and short-	—			—			—			(176,309		)	—			(176,309		)
	term investments
	Proceeds from sales of short-term	—			—			—			342,819			—			342,819
	investments
	Investments in subsidiaries	(38,484		)	(873		)	—			—			39,357			—
	Payment for purchases of licenses and other	—			—			—			(19,114		)	—			(19,114		)
	Total investing cash used in continuing operations	(38,484		)	(873		)	(8,305		)	(85,687		)	38,957			(94,392		)
	Total investing cash used in discontinued operations	—			—			—			(27,060		)	—			(27,060		)
	Net cash used in investing	(38,484		)	(873		)	(8,305		)	(112,747		)	38,957			(121,452		)
	activities
	Cash flows from financing activities:
	Borrowings under equipment financing facilities	—			—			—			41,780			—			41,780
	Proceeds from issuance of senior notes	—			—			—			750,000			—			750,000
Repayments under bank loans, equipment financing and other	—			—			(4,087		)	(24,070		)	—			(28,157		)
Capital contributions	—			—			38,484			873			(39,357		)	—
Total financing cash provided by continuing operations	—			—			34,397			768,583			(39,357		)	763,623
Total financing cash used in discontinued operations	—			—			—			(779		)	—			(779		)
Net cash provided by financing activities	—			—			34,397			767,804			(39,357		)	762,844
Effect of exchange rate changes	—			—			—			2,198			—			2,198
on cash and cash equivalents
Change in cash and cash equivalents held for sale	—			—			—			3,965			—			3,965
Net (decrease) increase in cash and cash equivalents	(78,467		)	—			(2,113		)	585,505			—			504,925
Cash and cash equivalents,	735,022			—			6,469			629,682			—			1,371,173
beginning of period
Cash and cash equivalents, end of	$	656,555		$	—		$	4,356		$	1,215,187		$	—		$	1,876,098
period

Basis_of_Presentation_Narrativ

Basis of Presentation (Narrative) (USD $)	3 Months Ended
Share data in Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Operating income	($239,080,000)	($79,516,000)	'
Non cash financing primarily related to the short-term financing	0	24,100,000	'
Revenue-based taxes and other excise taxes	31,100,000	48,400,000	'
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	-371,060,000	-164,202,000	'
Net income	-376,079,000	-207,504,000	'
Retained earnings	($569,045,000)	'	($192,966,000)
Stock Options [Member]	'	'	'
Antidilutive stock options	47.4	12.4	'
Restricted Stock [Member]	'	'	'
Antidilutive stock options	33.6	27.7	'

Basis_or_Presentation_Suppleme

Basis or Presentation (Supplemental Cash Flow Information) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Summary of Operations and Significant Accounting Policies [Abstract]	'	'
Cash paid for capital expenditures, including capitalized interest	$182,327	$241,788
Change in capital expenditures accrued and unpaid or financed, including accreted interest capitalized	-64,513	-89,057
Capital expenditures	117,814	152,731
Interest expense, net	140,212	109,662
Interest capitalized	12,722	23,620
Interest expense including capitalized interest	$152,934	$133,282

Basis_of_Presentation_Reconcil

Basis of Presentation (Reconciliation used to Calculate Basic and Diluted Net Income Per Common Share) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Summary of Operations and Significant Accounting Policies [Abstract]	'	'
Net income, value	($376,079)	($207,504)
Net income, per share amount	($2.19)	($1.21)

Basis_of_Presentation_Basis_of

Basis of Presentation Basis of Presentation (Schedule of Accumulated Other Comprehensive Loss) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Summary of Operations and Significant Accounting Policies [Abstract]	'	'
Cumulative foreign currency translation adjustment	($942,852)	($951,271)
Other	-5,375	-4,806
Total accumulated other comprehensive loss	($948,227)	($956,077)

Business_Update_and_Going_Conc1

Business Update and Going Concern (Details) (USD $)	Mar. 31, 2014
Going Concern [Abstract]	'
Amount Potentially Subject To Default	$1,158,400,000
Senior Notes	$4,400,000,000

Discontinued_Operations_Detail

Discontinued Operations (Details) (Nextel Peru [Member], USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Aug. 31, 2013
Nextel Peru [Member]	'	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'
Disposal Group, Including Discontinued Operation, Consideration	'	'	$405,500,000
Disposal Group, Including Discontinued Operation, Revenue	0	82,557,000	'
Disposal Group, Including Discontinued Operation, Operating Expense	0	-105,093,000	'
Disposal Group, Including Discontinued Operation, Other Income (Expense)	0	114,000	'
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	0	-22,422,000	'
Discontinued Operation, Tax Effect of Discontinued Operation	0	738,000	'
Discontinued Operation, Income (Loss) From Discontinued Operation, Before Gain (Loss) On Disposal Of Discontinued Operation, Net Of Tax	0	-21,684,000	'
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	21,000	0	'
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	21,000	-21,684,000	'
Disposal Group, Including Discontinued Operation, Consideration, Escrow Deposit	'	'	50,000,000
Release Of Consideration	$7,500,000	'	'

Impairment_and_Restructuring_C2

Impairment and Restructuring Charges Table (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Impairment of Long-Lived Assets [Line Items]	'	'
Asset Impairment Charges	'	$85,300,000
Restructuring, Settlement and Impairment Provisions	-2,527,000	124,607,000
Corporate [Member]	'	'
Impairment of Long-Lived Assets [Line Items]	'	'
Asset Impairment Charges	'	42,800,000
Restructuring, Settlement and Impairment Provisions	-1,965,000	43,500,000
BRAZIL	'	'
Impairment of Long-Lived Assets [Line Items]	'	'
Restructuring, Settlement and Impairment Provisions	0	23,814,000
CHILE	'	'
Impairment of Long-Lived Assets [Line Items]	'	'
Asset Impairment Charges	'	33,500,000
Restructuring, Settlement and Impairment Provisions	0	33,921,000
MEXICO	'	'
Impairment of Long-Lived Assets [Line Items]	'	'
Asset Impairment Charges	'	9,000,000
Restructuring, Settlement and Impairment Provisions	-562,000	19,655,000
ARGENTINA	'	'
Impairment of Long-Lived Assets [Line Items]	'	'
Restructuring, Settlement and Impairment Provisions	0	3,717,000
Contractual Rights [Member]	'	'
Impairment of Long-Lived Assets [Line Items]	'	'
Asset Impairment Charges	'	$38,600,000

Balance_Sheet_Details_Details

Balance Sheet Details (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Prepaid Expenses and Other	'	'
Prepaid value-added taxes	$230,375,000	$237,119,000
Prepaid Spectrum Fees	101,164,000	1,109,000
Prepaid income taxes	61,215,000	59,054,000
Other prepaid assets	115,327,000	96,312,000
Other current assets	54,333,000	42,506,000
Prepaid expenses and other	562,414,000	436,100,000
Property, Plant and Equipment	'	'
Land	9,707,000	9,652,000
Building and leasehold improvements	193,438,000	193,376,000
Digital mobile network equipment, communication towers and network software	4,981,008,000	4,829,134,000
Office equipment, furniture and fixtures and other	806,329,000	785,242,000
Corporate aircraft capital lease	43,374,000	42,747,000
Less: Accumulated depreciation and amortization	-3,146,058,000	-2,995,667,000
Property, plant and equipment, Gross	2,887,798,000	2,864,484,000
Construction in progress	507,231,000	523,576,000
Property, plant and equipment, net	3,395,029,000	3,388,060,000
Finite-Lived Intangible Assets [Line Items]	'	'
Indefinite-lived intangible assets	18,000,000	'
Accrued Expenses and Other	'	'
Capital expenditures	226,283,000	290,484,000
Non-income based taxes	95,710,000	114,360,000
Network system and information technology	91,572,000	92,109,000
Payroll related items and commissions	93,232,000	92,852,000
Accrued interest	115,671,000	128,509,000
Other	234,709,000	254,220,000
Accrued expenses and other	857,177,000	972,534,000
Licensing Agreements [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	1,259,950,000	1,220,990,000
Finite-Lived Intangible Assets, Accumulated Amortization	-264,826,000	-245,321,000
Finite-Lived Intangible Assets, Net Carrying Value	$995,124,000	$975,669,000

Debt_Narrative_Details

Debt (Narrative) (Details) (USD $)

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2009

Mar. 31, 2014

Dec. 31, 2011

Mar. 31, 2014

Aug. 31, 2009

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

NII Capital Corp [Member]

NII Capital Corp [Member]

NII International Telecom [Member]

NII International Telecom [Member]

Eight Point Eight Seven Five Percent Senior Notes Due Two Zero One Nine [Member]

Eight Point Eight Seven Five Percent Senior Notes Due Two Zero One Nine [Member]

Eight Point Eight Seven Five Percent Senior Notes Due Two Zero One Nine [Member]

Eleven Point Three Seven Five Percent Senior Notes Due Two Zero One Nine [Domain]

10.0% Senior Notes Due 2016 [Member]

7.625% Senior Notes Due 2021 [Member]

7.625% Senior Notes Due 2021 [Member]

Brazil [Member]

Brazil [Member]

Equipment Financing

'

'

'

'

'

'

'

'

'

'

'

'

$366,937,000

$352,725,000

Senior Notes

4,400,000,000

2,730,388,000

2,729,321,000

1,609,626,000

1,609,962,000

'

'

'

'

'

'

'

'

'

Notes interest rate

'

'

'

'

'

'

8.88%

8.88%

11.38%

10.00%

7.63%

'

'

'

Interest Penalty

'

'

'

'

'

'

'

'

0.25%

'

'

'

'

'

Maximum Interest Penalty, Per Year

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

Maturity Date

'

'

'

'

'

'December 15, 2019

'

'

'

'August 15, 2016

'

'

'

'

Principal amount

'

'

'

'

'

'

'

'

'

'

'

$1,450,000,000

'

'

Debt_Debt_Details

Debt (Debt) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'	'
Total debt, excluding current portion	$5,749,290	$5,696,632	'
Less: current portion	-103,535	-96,839	'
Total debt	5,852,825	5,793,471	'
Other Long-term Debt	2,062	3,901	'
Loans Payable to Bank	446,195	'	444,268
Corporate Aircraft Capital Lease	35,273	35,736	'
Senior notes, net	4,400,000	'	'
Brazil [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Capital Lease And Tower Financing Obligations	125,326	122,499	'
Equipment Financing	366,937	352,725	'
Mexico [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Capital Lease And Tower Financing Obligations	190,954	194,227	'
Equipment Financing	$346,064	$300,832	'

Debt_Debt_and_Equity_Component

Debt (Debt and Equity Components Recognized for Convertible Notes) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Principal amount of convertible notes	$5,501,272	$5,441,009

Fair_Value_Measurements_Fair_V

Fair Value Measurements (Fair Value on Recurring Basis) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Available Number Of Funds	'	2
Short-term Investments [Member] | Nextel Brazil [Member]	'	'
Available-for-sale Securities	$126.20	$418.60

Fair_Value_Measurements_Carryi

Fair Value Measurements (Carrying Amounts and Estimated Fair Values of Long-Term Debt Instrument) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Carrying amount	$5,501,272	$5,441,009
Long-term estimated fair value	3,083,414	3,493,289
Bank Loans and Other [Member]	'	'
Carrying amount	1,609,626	1,609,962
Long-term estimated fair value	1,110,380	1,271,370
General Financing [Member]	'	'
Carrying amount	448,257	448,169
Long-term estimated fair value	351,695	373,796
Equipment Financing [Member]	'	'
Carrying amount	713,001	653,557
Long-term estimated fair value	650,214	620,173
Senior Notes [Member]	'	'
Carrying amount	2,730,388	2,729,321
Long-term estimated fair value	$971,125	$1,227,950

Commitments_and_Contingencies_

Commitments and Contingencies (Narrative) (Details) (Nextel Brazil [Member], USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Nextel Brazil [Member]	'	'
Accrued Liabilities	$73.90	$70.90
Unasserted Claims	10.7	11.2
Estimated Range Of Possible Of Accrued Liabilities Loss Minimum	435.4	'
Estimated Range Of Possible Of Accrued Liabilities Loss Maximum	$439.40	'

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'	'	'
Valuation Allowance, Deferred Tax Asset, Change in Amount	$121,600,000	'	'
Deferred Tax Assets, Valuation Allowance	4,600,000,000	'	4,500,000,000
Deferred income tax benefit	-419,000	-5,370,000	'
Income tax provision	-5,040,000	-21,618,000	'
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	-371,060,000	-164,202,000	'
Income Tax Provision	5,000,000	21,600,000	'
Change in Income Tax Provision	'	$16,600,000	'

Segment_Reporting_Segment_Repo

Segment Reporting (Segment Reporting Information) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Operating revenues	$970,214	$1,330,839	'
Segment earnings (losses)	-83,931	227,913	'
Restructuring, Settlement and Impairment Provisions	2,527	-124,607	'
Less:	'	'	'
Depreciation and amortization	-157,676	-182,822	'
Foreign currency transaction (losses) gains, net	-7,186	23,225	'
Segment Reporting, Interest Expense and Other, Net	-124,794	-107,911	'
Income before income tax provision	-371,060	-164,202	'
Capital expenditures	117,814	152,731	'
Identifiable assets	8,189,665	'	8,679,954
Brazil [Member]	'	'	'
Operating revenues	461,224	635,872	'
Segment earnings (losses)	-29,145	157,643	'
Less:	'	'	'
Capital expenditures	67,688	92,908	'
Identifiable assets	3,625,452	'	3,705,642
Mexico [Member]	'	'	'
Operating revenues	381,844	514,014	'
Segment earnings (losses)	-12,540	101,229	'
Less:	'	'	'
Capital expenditures	38,522	52,465	'
Identifiable assets	2,564,613	'	2,695,091
Argentina [Member]	'	'	'
Operating revenues	112,680	167,024	'
Segment earnings (losses)	26,978	52,341	'
Less:	'	'	'
Capital expenditures	5,252	1,493	'
Identifiable assets	386,760	'	451,041
Chile [Member]	'	'	'
Operating revenues	14,432	25,264	'
Segment earnings (losses)	-24,749	-34,495	'
Less:	'	'	'
Capital expenditures	602	3,113	'
Identifiable assets	156,730	'	169,062
Corporate and Other [Member]	'	'	'
Operating revenues	34	-11,335	'
Segment earnings (losses)	-44,475	-48,805	'
Less:	'	'	'
Capital expenditures	5,750	2,752	'
Identifiable assets	$1,456,110	'	$1,659,118

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Statements (Narrative) (Details) (USD $)

3 Months Ended

1 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2011

Aug. 31, 2009

Dec. 31, 2009

Mar. 31, 2014

Dec. 31, 2011

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2012

7.625% Senior Notes Due 2021 [Member]

7.625% Senior Notes Due 2021 [Member]

10.0% and 8.875% Senior Notes Due 2016 and 2019 [Member]

10.0% Senior Notes Due 2016 [Member]

Eight Point Eight Seven Five Percent Senior Notes Due Two Zero One Nine [Member]

Eight Point Eight Seven Five Percent Senior Notes Due Two Zero One Nine [Member]

Eight Point Eight Seven Five Percent Senior Notes Due Two Zero One Nine [Member]

Eleven Point Three Seven Five Percent Senior Notes Due Two Zero One Nine [Domain]

NII Holdings Inc. (Parent) [Member]

NII Holdings Inc. (Parent) [Member]

NII Holdings Inc. (Parent) [Member]

Guarantor Subsidiaries [Member]

Guarantor Subsidiaries [Member]

Guarantor Subsidiaries [Member]

Restatement Adjustment [Member]

Restatement Adjustment [Member]

Principal amount

'

'

'

$1,450,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Notes interest rate

'

'

7.63%

'

'

10.00%

'

8.88%

8.88%

11.38%

'

'

'

'

'

'

Senior Notes

4,400,000,000

'

'

'

1,300,000,000

'

'

'

'

'

'

'

'

'

'

'

Maturity Date

'

'

'

'

'

'August 15, 2016

'December 15, 2019

'

'

'

'

'

'

'

'

'

Other (expense) income, net

-4,690,000

-4,754,000

'

'

'

'

'

'

'

'

2,928,000

10,506,000

'

0

-2,000

'

Net cash used in investing activities

90,409,000

-121,452,000

'

'

'

'

'

'

'

'

-58,566,000

-38,484,000

14,100,000

-1,700,000

-8,305,000

'

Net cash provided by operating activities

($485,559,000)

($142,630,000)

'

'

'

'

'

'

'

'

($39,917,000)

($39,983,000)

'

($47,001,000)

($28,205,000)

$14,500,000

Condensed_Consolidating_Financ3

Condensed Consolidating Financial Statements (Condensed Consolidating Balance Sheet) (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Cash and cash equivalents	$1,299,769		$1,733,783		$1,876,098	$1,371,173	$1,371,173
Short-term investments	305,208		585,760		'	'	'
Accounts receivable, net	501,450		522,563		'	'	'
Short-term Intercompany Receviables	0		0		'	'	'
Handset and accessory inventory	411,058		342,585		'	'	'
Deferred income taxes, net	110,633		127,395		'	'	'
Prepaid expenses and other	562,414		436,100		'	'	'
Total current assets	3,190,532		3,748,186		'	'	'
Property, plant and equipment, net	3,395,029		3,388,060		'	'	'
Investments in and advances to affiliates	0		0		'	'	'
Intangible assets, net	1,013,124		993,669		'	'	'
Deferred income taxes, net	28,178		26,713		'	'	'
Long-term Intercompany Receivables	0		0		'	'	'
Other assets	562,802		523,326		'	'	'
Total assets	8,189,665		8,679,954		'	'	'
Accounts payable	316,112		369,056		'	'	'
Short-term Intercompany Payables	0		0		'	'	'
Accrued expenses and other	857,177		972,534		'	'	'
Deferred revenues	119,004		128,148		'	'	'
Current portion of long-term debt	103,535		96,839		'	'	'
Deposit Liability, Current	715,782		720,013		'	'	'
Total current liabilities	2,111,610		2,286,590		'	'	'
Long-term debt	5,749,290		5,696,632		'	'	'
Deferred revenues	10,558		11,238		'	'	'
Deferred credits	97,308		108,991		'	'	'
Long-term Intercompany Payables	0		0		'	'	'
Other long-term liabilities	229,664		221,116		'	'	'
Total liabilities	8,198,430		8,324,567		'	'	'
Total stockholders' equity	-8,765		355,387		'	'	'
Total liabilities and stockholders' equity	8,189,665		8,679,954		'	'	'
NII Holdings Inc. (Parent) [Member]	'		'		'	'	'
Cash and cash equivalents	257,829		356,314		656,555	'	735,022
Short-term investments	0		0		'	'	'
Accounts receivable, net	0		0		'	'	'
Short-term Intercompany Receviables	34,196		31,803		'	'	'
Handset and accessory inventory	0		0		'	'	'
Deferred income taxes, net	0		0		'	'	'
Prepaid expenses and other	6,152		6,832		'	'	'
Total current assets	298,177		394,949		'	'	'
Property, plant and equipment, net	0		0		'	'	'
Investments in and advances to affiliates	1,636,058		1,867,753		'	'	'
Intangible assets, net	18,000		18,000		'	'	'
Deferred income taxes, net	15,821		16,025		'	'	'
Long-term Intercompany Receivables	1,458,283		1,474,658		'	'	'
Other assets	29,020		29,381		'	'	'
Total assets	3,455,359		3,800,766		'	'	'
Accounts payable	0		0		'	'	'
Short-term Intercompany Payables	465,567		464,798		'	'	'
Accrued expenses and other	0		0		'	'	'
Deferred revenues	0		0		'	'	'
Current portion of long-term debt	0		0		'	'	'
Deposit Liability, Current	0		0		'	'	'
Total current liabilities	465,567		464,798		'	'	'
Long-term debt	23		23		'	'	'
Deferred revenues	0		0		'	'	'
Deferred credits	1		3		'	'	'
Long-term Intercompany Payables	2,968,122		2,950,226		'	'	'
Other long-term liabilities	30,411		30,329		'	'	'
Total liabilities	3,464,124		3,445,379		'	'	'
Total stockholders' equity	-8,765		'		'	'	'
Total liabilities and stockholders' equity	3,455,359		3,800,766		'	'	'
NII Capital Corp. (Issuer) [Member]	'		'		'	'	'
Cash and cash equivalents	0	[1]	0	[1]	0	'	0
Short-term investments	0	[1]	0	[1]	'	'	'
Accounts receivable, net	0	[1]	0	[1]	'	'	'
Short-term Intercompany Receviables	92,206	[1]	129,810	[1]	'	'	'
Handset and accessory inventory	0	[1]	0	[1]	'	'	'
Deferred income taxes, net	0	[1]	0	[1]	'	'	'
Prepaid expenses and other	0	[1]	0	[1]	'	'	'
Total current assets	92,206	[1]	129,810	[1]	'	'	'
Property, plant and equipment, net	0	[1]	0	[1]	'	'	'
Investments in and advances to affiliates	1,217,111	[1]	1,503,202	[1]	'	'	'
Intangible assets, net	0	[1]	0	[1]	'	'	'
Deferred income taxes, net	0	[1]	0	[1]	'	'	'
Long-term Intercompany Receivables	3,782,566	[1]	3,714,760	[1]	'	'	'
Other assets	30,963	[1]	32,556	[1]	'	'	'
Total assets	5,122,846	[1]	5,380,328	[1]	'	'	'
Accounts payable	0	[1]	0	[1]	'	'	'
Short-term Intercompany Payables	119,098	[1]	132,007	[1]	'	'	'
Accrued expenses and other	78,224	[1]	59,490	[1]	'	'	'
Deferred revenues	0	[1]	0	[1]	'	'	'
Current portion of long-term debt	0	[1]	0	[1]	'	'	'
Deposit Liability, Current	0	[1]	0	[1]	'	'	'
Total current liabilities	197,322	[1]	191,497	[1]	'	'	'
Long-term debt	2,730,389	[1]	2,729,321	[1]	'	'	'
Deferred revenues	0	[1]	0	[1]	'	'	'
Deferred credits	2,950	[1]	2,950	[1]	'	'	'
Long-term Intercompany Payables	0	[1]	0	[1]	'	'	'
Other long-term liabilities	0	[1]	0	[1]	'	'	'
Total liabilities	2,930,661	[1]	2,923,768	[1]	'	'	'
Total stockholders' equity	2,192,185	[1]	'		'	'	'
Total liabilities and stockholders' equity	5,122,846	[1]	5,380,328	[1]	'	'	'
Guarantor Subsidiaries [Member]	'		'		'	'	'
Cash and cash equivalents	14,888	[2]	5,586	[2]	4,356	'	6,469
Short-term investments	0	[2]	0	[2]	'	'	'
Accounts receivable, net	431	[2]	627	[2]	'	'	'
Short-term Intercompany Receviables	86,053	[2]	72,595	[2]	'	'	'
Handset and accessory inventory	0	[2]	0	[2]	'	'	'
Deferred income taxes, net	1,107	[2]	1,145	[2]	'	'	'
Prepaid expenses and other	14,739	[2]	7,914	[2]	'	'	'
Total current assets	117,218	[2]	87,867	[2]	'	'	'
Property, plant and equipment, net	130,286	[2]	130,729	[2]	'	'	'
Investments in and advances to affiliates	1,271,936	[2]	1,562,080	[2]	'	'	'
Intangible assets, net	0	[2]	0	[2]	'	'	'
Deferred income taxes, net	0	[2]	0	[2]	'	'	'
Long-term Intercompany Receivables	707,192	[2]	701,680	[2]	'	'	'
Other assets	6,018	[2]	15,383	[2]	'	'	'
Total assets	2,232,650	[2]	2,497,739	[2]	'	'	'
Accounts payable	1,630	[2]	727	[2]	'	'	'
Short-term Intercompany Payables	1,483,031	[2]	1,485,835	[2]	'	'	'
Accrued expenses and other	16,885	[2]	26,089	[2]	'	'	'
Deferred revenues	0	[2]	0	[2]	'	'	'
Current portion of long-term debt	1,966	[2]	1,871	[2]	'	'	'
Deposit Liability, Current	0	[2]	0	[2]	'	'	'
Total current liabilities	1,503,512	[2]	1,514,522	[2]	'	'	'
Long-term debt	33,307	[2]	33,864	[2]	'	'	'
Deferred revenues	0	[2]	0	[2]	'	'	'
Deferred credits	15,259	[2]	15,384	[2]	'	'	'
Long-term Intercompany Payables	10,390	[2]	10,390	[2]	'	'	'
Other long-term liabilities	10,549	[2]	10,248	[2]	'	'	'
Total liabilities	1,573,017	[2]	1,584,408	[2]	'	'	'
Total stockholders' equity	659,633	[2]	'		'	'	'
Total liabilities and stockholders' equity	2,232,650	[2]	2,497,739	[2]	'	'	'
Prior Group Of Non-Guarantor Subsidiaries [Member]	'		'		'	'	'
Deposit Liability, Current	715,782		720,013		'	'	'
Non-Guarantor Subsidiaries [Member]	'		'		'	'	'
Cash and cash equivalents	1,027,052		1,371,883		1,215,187	'	629,682
Short-term investments	305,208		585,760		'	'	'
Accounts receivable, net	501,019		521,936		'	'	'
Short-term Intercompany Receviables	5,768		4,779		'	'	'
Handset and accessory inventory	411,058		342,585		'	'	'
Deferred income taxes, net	109,526		126,250		'	'	'
Prepaid expenses and other	541,523		421,354		'	'	'
Total current assets	2,901,154		3,374,547		'	'	'
Property, plant and equipment, net	3,264,743		3,257,618		'	'	'
Investments in and advances to affiliates	0		0		'	'	'
Intangible assets, net	995,124		975,669		'	'	'
Deferred income taxes, net	28,178		26,716		'	'	'
Long-term Intercompany Receivables	1,354		1,354		'	'	'
Other assets	496,801		446,006		'	'	'
Total assets	7,687,354		8,081,910		'	'	'
Accounts payable	314,482		368,329		'	'	'
Short-term Intercompany Payables	256,603		159,322		'	'	'
Accrued expenses and other	762,265		887,177		'	'	'
Deferred revenues	119,004		128,148		'	'	'
Current portion of long-term debt	101,569		94,968		'	'	'
Total current liabilities	2,269,705		2,357,957		'	'	'
Long-term debt	2,985,571		2,933,424		'	'	'
Deferred revenues	10,558		11,238		'	'	'
Deferred credits	94,919		106,682		'	'	'
Long-term Intercompany Payables	865,961		929,990		'	'	'
Other long-term liabilities	188,704		180,539		'	'	'
Total liabilities	6,415,418		6,519,830		'	'	'
Total stockholders' equity	1,271,936		'		'	'	'
Total liabilities and stockholders' equity	7,687,354		8,081,910		'	'	'
Consolidating Adjustments [Member]	'		'		'	'	'
Cash and cash equivalents	0		0		0	'	0
Short-term investments	0		0		'	'	'
Accounts receivable, net	0		0		'	'	'
Short-term Intercompany Receviables	-218,223		-238,987		'	'	'
Handset and accessory inventory	0		0		'	'	'
Deferred income taxes, net	0		0		'	'	'
Prepaid expenses and other	0		0		'	'	'
Total current assets	-218,223		-238,987		'	'	'
Property, plant and equipment, net	0		-287		'	'	'
Investments in and advances to affiliates	-4,125,105		-4,933,035		'	'	'
Intangible assets, net	0		0		'	'	'
Deferred income taxes, net	-15,821		-16,028		'	'	'
Long-term Intercompany Receivables	-5,949,395		-5,892,452		'	'	'
Other assets	0		0		'	'	'
Total assets	-10,308,544		-11,080,789		'	'	'
Accounts payable	0		0		'	'	'
Short-term Intercompany Payables	-2,324,299		-2,241,962		'	'	'
Accrued expenses and other	-197		-222		'	'	'
Deferred revenues	0		0		'	'	'
Current portion of long-term debt	0		0		'	'	'
Deposit Liability, Current	0		0		'	'	'
Total current liabilities	-2,324,496		-2,242,184		'	'	'
Long-term debt	0		0		'	'	'
Deferred revenues	0		0		'	'	'
Deferred credits	-15,821		-16,028		'	'	'
Long-term Intercompany Payables	-3,844,473		-3,890,606		'	'	'
Other long-term liabilities	0		0		'	'	'
Total liabilities	-6,184,790		-6,148,818		'	'	'
Total stockholders' equity	-4,123,754		'		'	'	'
Total liabilities and stockholders' equity	($10,308,544)		($11,080,789)		'	'	'
[1]	NII Capital Corp. is the issuer of our 7.625% senior notes due 2021, our 10.0%B senior notes due 2016 and our 8.875%B senior notes due 2019.
[2]	Represents our subsidiaries that have provided guarantees of the obligations of NII Capital Corp. under our 7.625% senior notes due 2021, our 10.0%B senior notes due 2016 and our 8.875%B senior notes due 2019.

Condensed_Consolidating_Financ4

Condensed Consolidating Financial Statements (Condensed Consolidating Statement of Operations) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Operating revenues	$970,214	$1,330,839
Operating expenses	'	'
Cost of revenues (exclusive of depreciation and amortization included below)	603,388	605,394
Selling, general and administrative	450,757	497,532
Provision for Doubtful Accounts	28,504	16,503
Restructuring, Settlement and Impairment Provisions	-2,527	124,607
Management fee, royalty fee and other	0	0
Depreciation and amortization	157,676	182,822
Total operating expenses	1,209,294	1,410,355
Operating income	-239,080	-79,516
Other income (expense)	'	'
Interest expense, net	-140,212	-109,662
Intercompany Interest Expense	0	0
Interest income	20,108	6,505
Intercompany Interest Income	0	0
Foreign currency transaction (losses) gains, net	-7,186	23,225
Equity in income of affiliates	0	0
Other (expense) income, net	-4,690	-4,754
Total other expense	-131,980	-84,686
(Loss) income before income tax benefit (provision)	-371,060	-164,202
Income tax benefit (provision)	-5,040	-21,618
Income (Loss) from Continuing Operations Attributable to Parent	-376,100	-185,820
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	21	-21,684
Net income	-376,079	-207,504
Foreign currency translation adjustment	8,419	77,453
Other	-569	-1,925
Other comprehensive income	7,850	75,528
Total comprehensive income	-368,229	-131,976
NII Holdings Inc. (Parent) [Member]	'	'
Operating revenues	0	0
Operating expenses	'	'
Cost of revenues (exclusive of depreciation and amortization included below)	0	0
Selling, general and administrative	803	791
Restructuring, Settlement and Impairment Provisions	0	0
Management fee, royalty fee and other	0	0
Depreciation and amortization	0	0
Total operating expenses	803	791
Operating income	-803	-791
Other income (expense)	'	'
Interest expense, net	-141	-140
Intercompany Interest Expense	-57,896	-57,896
Interest income	102	309
Intercompany Interest Income	81	1,118
Foreign currency transaction (losses) gains, net	0	0
Equity in income of affiliates	-327,550	-161,046
Other (expense) income, net	2,928	10,506
Total other expense	-382,476	-207,149
(Loss) income before income tax benefit (provision)	-383,279	-207,940
Income tax benefit (provision)	7,200	436
Income (Loss) from Continuing Operations Attributable to Parent	-376,079	-207,504
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0
Net income	-376,079	-207,504
Foreign currency translation adjustment	8,419	77,453
Other	-569	-1,925
Other comprehensive income	7,850	75,528
Total comprehensive income	-368,229	-131,976
Guarantor Subsidiaries [Member]	'	'
Operating revenues	824	768
Operating expenses	'	'
Cost of revenues (exclusive of depreciation and amortization included below)	0	0
Selling, general and administrative	43,623	46,401
Restructuring, Settlement and Impairment Provisions	-1,965	77,000
Management fee, royalty fee and other	-15,389	-28,699
Depreciation and amortization	6,027	10,397
Total operating expenses	32,296	105,099
Operating income	-31,472	-104,331
Other income (expense)	'	'
Interest expense, net	-235	-410
Intercompany Interest Expense	-17	-12
Interest income	3	4
Intercompany Interest Income	206	35
Foreign currency transaction (losses) gains, net	0	0
Equity in income of affiliates	-297,709	-47,447
Other (expense) income, net	0	-2
Total other expense	-297,752	-47,832
(Loss) income before income tax benefit (provision)	-329,224	-152,163
Income tax benefit (provision)	-4,550	-2,605
Income (Loss) from Continuing Operations Attributable to Parent	-333,774	-154,768
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0
Net income	-333,774	-154,768
Foreign currency translation adjustment	8,159	77,640
Other	-569	-1,925
Other comprehensive income	7,590	75,715
Total comprehensive income	-326,184	-79,053
Prior Group Of Non-Guarantor Subsidiaries [Member]	'	'
Operating expenses	'	'
Restructuring, Settlement and Impairment Provisions	'	47,607
Other income (expense)	'	'
Income (Loss) from Continuing Operations Attributable to Parent	-297,730	-25,763
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	21	-21,684
Non-Guarantor Subsidiaries [Member]	'	'
Operating revenues	970,158	1,330,839
Operating expenses	'	'
Cost of revenues (exclusive of depreciation and amortization included below)	603,388	605,394
Selling, general and administrative	408,748	452,004
Restructuring, Settlement and Impairment Provisions	-562	'
Management fee, royalty fee and other	16,668	38,309
Depreciation and amortization	151,649	172,425
Total operating expenses	1,179,891	1,315,739
Operating income	-209,733	15,100
Other income (expense)	'	'
Interest expense, net	-79,211	-49,796
Intercompany Interest Expense	-12,578	-13,448
Interest income	20,003	6,192
Intercompany Interest Income	2	0
Foreign currency transaction (losses) gains, net	-7,186	23,225
Equity in income of affiliates	0	0
Other (expense) income, net	-4,977	-4,752
Total other expense	-83,947	-38,579
(Loss) income before income tax benefit (provision)	-293,680	-23,479
Income tax benefit (provision)	-4,050	-2,284
Net income	-297,709	-47,447
Foreign currency translation adjustment	8,159	77,640
Other	-569	-1,925
Other comprehensive income	7,590	75,715
Total comprehensive income	-290,119	28,268
Consolidating Adjustments [Member]	'	'
Operating revenues	-768	-768
Operating expenses	'	'
Cost of revenues (exclusive of depreciation and amortization included below)	0	0
Selling, general and administrative	-2,417	-1,664
Restructuring, Settlement and Impairment Provisions	0	0
Management fee, royalty fee and other	-1,279	-9,610
Depreciation and amortization	0	0
Total operating expenses	-3,696	-11,274
Operating income	2,928	10,506
Other income (expense)	'	'
Interest expense, net	0	0
Intercompany Interest Expense	70,491	71,356
Interest income	0	0
Intercompany Interest Income	-70,491	-71,356
Foreign currency transaction (losses) gains, net	0	0
Equity in income of affiliates	923,990	257,230
Other (expense) income, net	-2,641	-10,506
Total other expense	921,349	246,724
(Loss) income before income tax benefit (provision)	924,277	257,230
Income tax benefit (provision)	0	-13,770
Income (Loss) from Continuing Operations Attributable to Parent	924,277	243,460
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0
Net income	924,277	243,460
Foreign currency translation adjustment	-24,477	-232,920
Other	1,707	5,775
Other comprehensive income	-22,770	-227,145
Total comprehensive income	901,507	16,315
NII Capital Corp. (Issuer) [Member]	'	'
Operating revenues	0	0
Operating expenses	'	'
Cost of revenues (exclusive of depreciation and amortization included below)	0	0
Selling, general and administrative	0	0
Restructuring, Settlement and Impairment Provisions	0	0
Management fee, royalty fee and other	0	0
Depreciation and amortization	0	0
Total operating expenses	0	0
Operating income	0	0
Other income (expense)	'	'
Interest expense, net	-60,625	-59,316
Intercompany Interest Expense	0	0
Interest income	0	0
Intercompany Interest Income	70,202	70,203
Foreign currency transaction (losses) gains, net	0	0
Equity in income of affiliates	-298,731	-48,737
Other (expense) income, net	0	0
Total other expense	-289,154	-37,850
(Loss) income before income tax benefit (provision)	-289,154	-37,850
Income tax benefit (provision)	-3,640	-3,395
Income (Loss) from Continuing Operations Attributable to Parent	-292,794	-41,245
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	0
Net income	-292,794	-41,245
Foreign currency translation adjustment	8,159	77,640
Other	-569	-1,925
Other comprehensive income	7,590	75,715
Total comprehensive income	($285,204)	$34,470

Condensed_Consolidating_Financ5

Condensed Consolidating Financial Statements (Condensed Consolidating Statement of Cash Flows) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Cash flows from operating activities:	'		'
Net income	($376,079)		($207,504)
Adjustments to reconcile net income (loss) to net cash provided by operating activities	-109,501		78,919
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	-485,580		-128,585
Cash Provided by (Used in) Operating Activities, Discontinued Operations	21		-14,045
Net cash provided by operating activities	-485,559		-142,630
Cash flows from investing activities:	'		'
Capital expenditures	-182,327		-241,788
Purchase of long-term and short-term investments	-203,232		-176,309
Proceeds from sales of short-term investments	510,117		342,819
Investment in Subsidiaries	0		0
Other, net	34,119		-19,114
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	90,439		-94,392
Cash Provided by (Used in) Investing Activities, Discontinued Operations	-30		-27,060
Net cash used in investing activities	90,409		-121,452
Proceeds from Long-term Lines of Credit	'		41,780
Cash flows from financing activities:	'		'
Borrowings under vendor financing	14,691		'
Intercompany dividends	'		0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	-4,640		763,623
Cash Provided by (Used in) Financing Activities, Discontinued Operations	0		-779
Repayments of import financing	-19,331		'
Capital contributions	0		'
Net cash (used in) provided by financing activities	-4,640		762,844
Effect of exchange rate changes on cash and cash equivalents	-34,224		2,198
Increase (Decrease) In Cash And Cash Equivalents, Held-For-Sale	0		3,965
Net (decrease) increase in cash and cash equivalents	-434,014		504,925
Cash and cash equivalents, beginning of period	1,733,783		1,371,173
Cash and cash equivalents, end of period	1,299,769		1,876,098
Proceeds from Issuance of Senior Long-term Debt	0		750,000
Repayments Under Bank Loans, Equipment Financing and Other	'		28,157
Other, net	-19,331		-28,157
NII Holdings Inc. (Parent) [Member]	'		'
Cash flows from operating activities:	'		'
Net income	-376,079		-207,504
Adjustments to reconcile net income (loss) to net cash provided by operating activities	336,162		167,521
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	-39,917		-39,983
Cash Provided by (Used in) Operating Activities, Discontinued Operations	0		0
Net cash provided by operating activities	-39,917		-39,983
Cash flows from investing activities:	'		'
Capital expenditures	0		0
Purchase of long-term and short-term investments	0		0
Proceeds from sales of short-term investments	0		0
Investment in Subsidiaries	58,566		38,484
Other, net	0		0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	-58,566		-38,484
Cash Provided by (Used in) Investing Activities, Discontinued Operations	0		0
Net cash used in investing activities	-58,566		-38,484
Proceeds from Long-term Lines of Credit	'		0
Cash flows from financing activities:	'		'
Borrowings under vendor financing	0		'
Intercompany dividends	'		0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	'		0
Cash Provided by (Used in) Financing Activities, Discontinued Operations	'		0
Repayments of import financing	-2		'
Capital contributions	0		'
Net cash (used in) provided by financing activities	-2		0
Effect of exchange rate changes on cash and cash equivalents	0		0
Increase (Decrease) In Cash And Cash Equivalents, Held-For-Sale	'		0
Net (decrease) increase in cash and cash equivalents	-98,485		-78,467
Cash and cash equivalents, beginning of period	356,314		'
Cash and cash equivalents, end of period	257,829		656,555
Proceeds from Issuance of Senior Long-term Debt	'		0
Repayments Under Bank Loans, Equipment Financing and Other	'		0
NII Capital Corp. (Issuer) [Member]	'		'
Cash flows from operating activities:	'		'
Net income	-292,794		-41,245
Adjustments to reconcile net income (loss) to net cash provided by operating activities	293,000		42,118
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	206		873
Cash Provided by (Used in) Operating Activities, Discontinued Operations	0		0
Net cash provided by operating activities	206		873
Cash flows from investing activities:	'		'
Capital expenditures	0		0
Purchase of long-term and short-term investments	0		0
Proceeds from sales of short-term investments	0		0
Investment in Subsidiaries	216		873
Other, net	0		0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	-216		-873
Cash Provided by (Used in) Investing Activities, Discontinued Operations	0		0
Net cash used in investing activities	-216		-873
Proceeds from Long-term Lines of Credit	'		0
Cash flows from financing activities:	'		'
Borrowings under vendor financing	0		'
Intercompany dividends	'		0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	'		0
Cash Provided by (Used in) Financing Activities, Discontinued Operations	'		0
Repayments of import financing	0		'
Capital contributions	10		'
Net cash (used in) provided by financing activities	10		0
Effect of exchange rate changes on cash and cash equivalents	0		0
Increase (Decrease) In Cash And Cash Equivalents, Held-For-Sale	'		0
Net (decrease) increase in cash and cash equivalents	0		0
Cash and cash equivalents, beginning of period	0	[1]	'
Cash and cash equivalents, end of period	0	[1]	0
Proceeds from Issuance of Senior Long-term Debt	'		0
Repayments Under Bank Loans, Equipment Financing and Other	'		0
Guarantor Subsidiaries [Member]	'		'
Cash flows from operating activities:	'		'
Net income	-333,774		-154,768
Adjustments to reconcile net income (loss) to net cash provided by operating activities	286,773		126,563
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	-47,001		-28,205
Cash Provided by (Used in) Operating Activities, Discontinued Operations	0		0
Net cash provided by operating activities	-47,001		-28,205
Cash flows from investing activities:	'		'
Capital expenditures	-1,700		-8,305
Purchase of long-term and short-term investments	0		0
Proceeds from sales of short-term investments	0		0
Investment in Subsidiaries	0		0
Other, net	0		0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	-1,700		-8,305
Cash Provided by (Used in) Investing Activities, Discontinued Operations	0		0
Net cash used in investing activities	-1,700		-8,305
Proceeds from Long-term Lines of Credit	'		0
Cash flows from financing activities:	'		'
Borrowings under vendor financing	0		'
Intercompany dividends	'		38,484
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	'		34,397
Cash Provided by (Used in) Financing Activities, Discontinued Operations	'		0
Repayments of import financing	-463		'
Capital contributions	58,466		'
Net cash (used in) provided by financing activities	58,003		34,397
Effect of exchange rate changes on cash and cash equivalents	0		0
Increase (Decrease) In Cash And Cash Equivalents, Held-For-Sale	'		0
Net (decrease) increase in cash and cash equivalents	9,302		-2,113
Cash and cash equivalents, beginning of period	5,586	[2]	'
Cash and cash equivalents, end of period	14,888	[2]	4,356
Proceeds from Issuance of Senior Long-term Debt	'		0
Repayments Under Bank Loans, Equipment Financing and Other	'		4,087
Prior Group Of Non-Guarantor Subsidiaries [Member]	'		'
Cash flows from operating activities:	'		'
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	-398,868		-61,670
Cash Provided by (Used in) Operating Activities, Discontinued Operations	21		-14,045
Cash flows from investing activities:	'		'
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	92,139		-85,687
Cash Provided by (Used in) Investing Activities, Discontinued Operations	-30		-27,060
Cash flows from financing activities:	'		'
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	'		768,583
Cash Provided by (Used in) Financing Activities, Discontinued Operations	'		-779
Increase (Decrease) In Cash And Cash Equivalents, Held-For-Sale	'		3,965
Non-Guarantor Subsidiaries [Member]	'		'
Cash flows from operating activities:	'		'
Net income	-297,709		-47,447
Adjustments to reconcile net income (loss) to net cash provided by operating activities	-101,159		-14,223
Net cash provided by operating activities	-398,847		-75,715
Cash flows from investing activities:	'		'
Capital expenditures	-180,627		-233,083
Purchase of long-term and short-term investments	-203,232		-176,309
Proceeds from sales of short-term investments	510,117		342,819
Investment in Subsidiaries	0		0
Other, net	-34,119		-19,114
Net cash used in investing activities	92,109		-112,747
Proceeds from Long-term Lines of Credit	'		41,780
Cash flows from financing activities:	'		'
Borrowings under vendor financing	14,691		'
Intercompany dividends	'		873
Repayments of import financing	-18,866		'
Capital contributions	306		'
Net cash (used in) provided by financing activities	-3,869		767,804
Effect of exchange rate changes on cash and cash equivalents	-34,224		2,198
Net (decrease) increase in cash and cash equivalents	-344,831		585,505
Cash and cash equivalents, beginning of period	1,371,883		'
Cash and cash equivalents, end of period	1,027,052		1,215,187
Proceeds from Issuance of Senior Long-term Debt	'		750,000
Repayments Under Bank Loans, Equipment Financing and Other	'		24,070
Consolidating Adjustments [Member]	'		'
Cash flows from operating activities:	'		'
Net income	924,277		243,460
Adjustments to reconcile net income (loss) to net cash provided by operating activities	-924,277		-243,060
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	0		400
Cash Provided by (Used in) Operating Activities, Discontinued Operations	0		0
Net cash provided by operating activities	0		400
Cash flows from investing activities:	'		'
Capital expenditures	0		-400
Purchase of long-term and short-term investments	0		0
Proceeds from sales of short-term investments	0		0
Investment in Subsidiaries	-58,782		-39,357
Other, net	0		0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	58,782		38,957
Cash Provided by (Used in) Investing Activities, Discontinued Operations	0		0
Net cash used in investing activities	58,782		38,957
Proceeds from Long-term Lines of Credit	'		0
Cash flows from financing activities:	'		'
Borrowings under vendor financing	0		'
Intercompany dividends	'		-39,357
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	'		-39,357
Cash Provided by (Used in) Financing Activities, Discontinued Operations	'		0
Repayments of import financing	0		'
Capital contributions	-58,782		'
Net cash (used in) provided by financing activities	-58,782		-39,357
Effect of exchange rate changes on cash and cash equivalents	0		0
Increase (Decrease) In Cash And Cash Equivalents, Held-For-Sale	'		0
Net (decrease) increase in cash and cash equivalents	0		0
Cash and cash equivalents, beginning of period	0		'
Cash and cash equivalents, end of period	0		0
Proceeds from Issuance of Senior Long-term Debt	'		0
Repayments Under Bank Loans, Equipment Financing and Other	'		$0
[1]	NII Capital Corp. is the issuer of our 7.625% senior notes due 2021, our 10.0%B senior notes due 2016 and our 8.875%B senior notes due 2019.
[2]	Represents our subsidiaries that have provided guarantees of the obligations of NII Capital Corp. under our 7.625% senior notes due 2021, our 10.0%B senior notes due 2016 and our 8.875%B senior notes due 2019.