Significant Transactions Schedule of estimated fair value of the consideration transferred after Acquisition (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	6 Months Ended
	Jul. 09, 2013		Jul. 08, 2013
Business Acquisition, Contingent Consideration [Line Items]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 47
Estimated value per share of acquirer's previously-held equity interests			$ 4.40
Percentage of estimated previously held equity interest per share, discounted			12.00%
Clearwire Acquisition [Member]
Business Acquisition, Contingent Consideration [Line Items]
Payments to Acquire Equity Method Investments	3,681
Estimated value of acquirer's previously-held equity interests			3,251	[1]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	59	[2]
Business Combination, Consideration Transferred	$ 6,991

[1] (1)Equals the estimated fair value of Sprint Communications' previously-held equity interest in Clearwire valued at $4.40 per share, which represented an approximate 12% discount to Sprint Communications' acquisition price for shares not held by Sprint Communications prior to the Clearwire Acquisition Date. The difference between $4.40 and the per share merger consideration of $5.00 represents an estimate of a control premium, which would not generally be included in the valuation of Sprint Communications' non-controlling interest.

[2] (2)$47 million of the liability was paid in cash pursuant to the Clearwire Merger Agreement.