Principal Contractual Commitments Excluding Open Orders for Inventory Purchases That Support Normal Operations (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013
Long-term Purchase Commitment [Line Items]
Six Months Ended December 31, 2013	$ 1,434
Year Ended December 31, 2014	2,582
Year Ended December 31, 2015	2,436
Year Ended December 31, 2016	874
Year Ended December 31, 2017	1,690
Thereafter	5,391
Total	14,407
Debt principal and interest
Long-term Purchase Commitment [Line Items]
Six Months Ended December 31, 2013	271
Year Ended December 31, 2014	534
Year Ended December 31, 2015	867
Year Ended December 31, 2016	43
Year Ended December 31, 2017	1,043
Thereafter	1,406
Total	4,164
Long-term capital lease obligations
Long-term Purchase Commitment [Line Items]
Six Months Ended December 31, 2013	380
Year Ended December 31, 2014	628
Year Ended December 31, 2015	509
Year Ended December 31, 2016	136
Year Ended December 31, 2017	38
Thereafter	98
Total	1,789
Financing lease obligations, including interest
Long-term Purchase Commitment [Line Items]
Year Ended December 31, 2014	1
Year Ended December 31, 2015	1
Year Ended December 31, 2016	1
Year Ended December 31, 2017	1
Thereafter	10
Total	14
Operating leases
Long-term Purchase Commitment [Line Items]
Six Months Ended December 31, 2013	311
Year Ended December 31, 2014	600
Year Ended December 31, 2015	543
Year Ended December 31, 2016	499
Year Ended December 31, 2017	440
Thereafter	2,254
Total	4,647
Unconditional Purchase Obligation
Long-term Purchase Commitment [Line Items]
Six Months Ended December 31, 2013	167	[1]
Year Ended December 31, 2014	471	[1]
Year Ended December 31, 2015	251	[1]
Year Ended December 31, 2016	39	[1]
Year Ended December 31, 2017	31	[1]
Thereafter	20	[1]
Total	979	[1]
Other commitments
Long-term Purchase Commitment [Line Items]
Six Months Ended December 31, 2013	305	[2],[3]
Year Ended December 31, 2014	348	[2],[3]
Year Ended December 31, 2015	265	[2],[3]
Year Ended December 31, 2016	156	[2],[3]
Year Ended December 31, 2017	137	[2],[3]
Thereafter	1,603	[2],[3]
Total	$ 2,814	[2],[3]

[1] Includes unconditional purchase obligations related to agreements to acquire and license digital video content that represent long-term liabilities or that are not reflected on the consolidated balance sheets.

[2] Includes the estimated timing and amounts of payments for rent and tenant improvements associated with build-to-suit lease arrangements that have not been placed in service.

[3] Excludes $317 million of tax contingencies for which we cannot make a reasonably reliable estimate of the amount and period of payment, if any.