Long-Term Debt, Financing and Capital Lease Obligations (Narrative) (Details) (USD $)	6 Months Ended	12 Months Ended						4 Months Ended		3 Months Ended		3 Months Ended								3 Months Ended	12 Months Ended												6 Months Ended	12 Months Ended									12 Months Ended
	Jul. 10, 2013	Dec. 31, 2013 site years	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Exchangeable notes [Member] Clearwire Communications LLC [Member]	Jul. 10, 2013 Exchangeable notes [Member] Clearwire Communications LLC [Member]	Dec. 31, 2013 Secured Debt [Member] Clearwire Communications LLC [Member]	May 01, 2013 Secured Debt [Member] iPCS Inc Secured Notes [Member]	Dec. 31, 2013 Secured Debt [Member] iPCS Inc Secured Notes [Member]	Nov. 30, 2013 Secured Debt [Member] Clearwire Communications LLC 12% Senior Secured Notes due 2015 [Member]	Oct. 24, 2013 Secured Debt [Member] Clearwire Communications LLC 12% Senior Secured Notes due 2015 [Member]	Nov. 30, 2013 Secured Debt [Member] Clearwire Communications LLC 12% Second-priority Secured Notes due 2017 [Member]	Sep. 11, 2013 Senior Notes [Member] Sprint Communications Inc. Guaranteed Notes due 2021 [Member]	Sep. 11, 2013 Senior Notes [Member] Sprint Corporation 7.875% [Member]	Dec. 12, 2013 Senior Notes [Member] Sprint Corporation 7.125% [Member] [Member]	May 29, 2012 Line of Credit [Member] Secured Equipment Credit Facility [Member]	Dec. 31, 2013 Revolving Credit Facility [Member] Unsecured Revolving Credit Facility expires in 2018 [Member]	Apr. 02, 2013 Revolving Credit Facility [Member] Unsecured Revolving Credit Facility expires in 2018 [Member]	Dec. 31, 2013 Letter of Credit [Member] Unsecured Revolving Credit Facility expires in 2018 [Member]	Dec. 30, 2012 Successor [Member]	Dec. 31, 2013 Successor [Member]	Dec. 31, 2013 Successor [Member] Exchangeable notes [Member] Clearwire Communications LLC [Member]	Dec. 31, 2012 Successor [Member] Exchangeable notes [Member] Clearwire Communications LLC [Member]	Dec. 31, 2013 Successor [Member] Secured Debt [Member] Clearwire Communications LLC [Member]	Dec. 31, 2012 Successor [Member] Secured Debt [Member] Clearwire Communications LLC [Member]	Dec. 31, 2013 Successor [Member] Secured Debt [Member] iPCS Inc Secured Notes [Member]	Dec. 31, 2013 Successor [Member] Convertible Debt [Member] Sprint Nextel Corporation Guaranteed Notes [Member]	Dec. 31, 2013 Successor [Member] Senior Notes [Member] Sprint Corporation [Member]	Dec. 31, 2013 Successor [Member] Senior Notes [Member] Sprint Nextel Corporation Guaranteed Notes [Member]	Dec. 31, 2013 Successor [Member] Line of Credit [Member] Secured Equipment Credit Facility [Member]	Dec. 31, 2013 Successor [Member] Guaranteed notes [Member] Sprint Nextel Corporation Guaranteed Notes [Member]	Dec. 31, 2013 Successor [Member] Revolving Credit Facility [Member] Unsecured Revolving Credit Facility expires in 2018 [Member]	Jul. 10, 2013 Predecessor [Member]	Dec. 31, 2012 Predecessor [Member]	Dec. 31, 2011 Predecessor [Member]	Dec. 31, 2012 Predecessor [Member] Secured Debt [Member] iPCS Inc Secured Notes [Member]	Dec. 31, 2012 Predecessor [Member] Convertible Debt [Member] Sprint Nextel Corporation Guaranteed Notes [Member]	Dec. 31, 2012 Predecessor [Member] Senior Notes [Member] Sprint Corporation [Member]	Dec. 31, 2012 Predecessor [Member] Senior Notes [Member] Sprint Nextel Corporation Guaranteed Notes [Member]	Dec. 31, 2012 Predecessor [Member] Line of Credit [Member] Secured Equipment Credit Facility [Member]	Dec. 31, 2012 Predecessor [Member] Guaranteed notes [Member] Sprint Nextel Corporation Guaranteed Notes [Member]	Dec. 31, 2012 Predecessor [Member] Revolving Credit Facility [Member] Unsecured Revolving Credit Facility expires in 2018 [Member]	Dec. 31, 2013 Tranche one [Member] Line of Credit [Member] Secured Equipment Credit Facility [Member]	Feb. 10, 2014 Subsequent Event [Member] Revolving Credit Facility [Member] Unsecured Revolving Credit Facility expires in 2018 [Member]
Schedule of Capitalization, Long-term Debt [Line Items]
Principal of debt outstanding		$ 9,000,000,000
Long-term debt issued by 100% owned subsidiary and is fully and unconditionally guaranteed by the parent		20,300,000,000
Secured Debt		1,900,000,000
Secured Debt Collateral		15,699,000,000
Interest Costs Capitalized	29,000,000	30,000,000	278,000,000	413,000,000
Cash interest payments	814,000,000	1,000,000,000	1,400,000,000	1,000,000,000
Senior Notes weighted average effective interest rate																					6.40%												8.90%	7.50%
Redeemable notes		28,800,000,000
Principal amount of notes with the right to require the Company to repurchase on change of control		20,100,000,000							200,000,000
Principal amount of notes with the right to require the Company to repurchase on change of control							300,000,000
Percentage of principal amount required to repurchase notes on change of control		101.00%
Debt Instrument, Interest Rate, Stated Percentage					8.25%						12.00%		7.25%	7.875%	7.125%							8.25%		14.75%			1.00%
Fixed amount of cash for a fixed principal amount of notes surrendered that becomes exchangeable at the holder's option	706.21
Fixed principal amount of notes surrendered for a fixed amount of cash that becomes exchangeable at the holder's option	1,000
Total cash consideration payable upon an exchange of all principal amount of notes outstanding						444,000,000
Long-term Debt, Gross					629,000,000																	629,000,000	0	300,000,000	0	181,000,000	0	9,000,000,000	9,280,000,000		4,000,000,000					481,000,000	3,100,000,000	0	9,280,000,000		4,000,000,000
Debt Instrument, Face Amount													2,250,000,000	4,250,000,000	2,500,000,000
Repayments of Long-term Debt								300,000,000		2,800,000,000		500
Call Redemption Debt Premiums																				0	(180,000,000)												0	0	0
Line of Credit Facility, Maximum Borrowing Capacity																		3,000,000,000																										3,300,000,000
Letters of Credit Outstanding, Amount																			914,000,000
Line of Credit Facility, Remaining Borrowing Capacity																	2,100,000,000
Line of Credit Facility, Amount Outstanding																														889,000,000		0								296,000,000		0	1,000,000,000
Debt Instrument, Annual Principal Payment																																											$ 111,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate																														2.03%
Debt Instrument, Interest Rate, Effective Percentage																6.00%
Number of cell sites leased back		3,000
Term in years for cell sites leased back renewal options		20
Ratio Of Total Indebtedness To Adjusted EBITDA		2.5