CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Starburst II, Inc. [Member]	Starburst II, Inc. [Member] Additional Paid-in Capital [Member]	Starburst II, Inc. [Member] Retained Earnings [Member]	Starburst II, Inc. [Member] Accumulated Other Comprehensive Loss [Member]	Common Class A [Member] Starburst II, Inc. [Member] Common Stock [Member]	Common Class B [Member] Starburst II, Inc. [Member] Common Stock [Member]
Balance at Dec. 31, 2012	$ 7,087,000,000	$ 6,019,000,000	$ 47,016,000,000	$ (44,815,000,000)	$ (1,133,000,000)	$ 3,110,454,000	$ 3,136,619,000	$ (26,542,000)	$ 346,000	$ 0	$ 31,000
Balance (in shares) at Dec. 31, 2012										0	3,106,000
Balance (in shares) at Dec. 31, 2012		3,010,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Expenses incurred by SoftBank for the benefit of the Company						24,000,000	24,000,000
Net loss	(2,240,000,000)			(2,240,000,000)		(123,364,000)		(123,364,000)
Other comprehensive income, net of tax						96,755,000			96,755,000
Other comprehensive income, net of tax	65,000,000				65,000,000
Issuance of common shares, net (in shares)		14,000,000
Issuance of common shares, net	51,000,000	29,000,000	23,000,000
Issuance of common shares, net				(1,000,000)
Share-based compensation expense	17,000,000		17,000,000
Balance at Jun. 30, 2013	4,980,000,000	6,048,000,000	47,056,000,000	(47,056,000,000)	(1,068,000,000)	3,107,845,000	3,160,619,000	(149,906,000)	97,101,000	0	31,000
Balance (in shares) at Jun. 30, 2013										0	3,106,000
Balance (in shares) at Jun. 30, 2013		3,024,000,000
Balance at Mar. 31, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,597,000,000)					(114,083,000)
Other comprehensive income, net of tax	51,000,000
Balance at Jun. 30, 2013	$ 4,980,000,000					$ 3,107,845,000				$ 0	$ 31,000
Balance (in shares) at Jun. 30, 2013										0	3,106,000