Commitments and Contingencies - Principal Contractual Commitments Excluding Open Orders for Inventory Purchases That Support Normal Operations (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Long-term Purchase Commitments [Line Items]
Year Ended December 31, 2014	$ 3,884
Year Ended December 31, 2015	3,152
Year Ended December 31, 2016	1,345
Year Ended December 31, 2017	1,917
Year Ended December 31, 2018	773
Thereafter	5,358
Total	16,429
Debt principal and interest
Long-term Purchase Commitments [Line Items]
Year Ended December 31, 2014	835
Year Ended December 31, 2015	906
Year Ended December 31, 2016	81
Year Ended December 31, 2017	1,081
Year Ended December 31, 2018	69
Thereafter	1,375
Total	4,347
Capital leases, including interest
Long-term Purchase Commitments [Line Items]
Year Ended December 31, 2014	963
Year Ended December 31, 2015	883
Year Ended December 31, 2016	361
Year Ended December 31, 2017	71
Year Ended December 31, 2018	42
Thereafter	117
Total	2,437
Financing lease obligations, including interest
Long-term Purchase Commitments [Line Items]
Year Ended December 31, 2014	49
Year Ended December 31, 2015	48
Year Ended December 31, 2016	52
Year Ended December 31, 2017	52
Year Ended December 31, 2018	53
Thereafter	529
Total	783
Operating leases
Long-term Purchase Commitments [Line Items]
Year Ended December 31, 2014	752
Year Ended December 31, 2015	654
Year Ended December 31, 2016	604
Year Ended December 31, 2017	539
Year Ended December 31, 2018	470
Thereafter	2,116
Total	5,135
Unconditional purchase obligations
Long-term Purchase Commitments [Line Items]
Year Ended December 31, 2014	539	[1]
Year Ended December 31, 2015	386	[1]
Year Ended December 31, 2016	80	[1]
Year Ended December 31, 2017	37	[1]
Year Ended December 31, 2018	29	[1]
Thereafter	27	[1]
Total	1,098	[1]
Other commitments
Long-term Purchase Commitments [Line Items]
Year Ended December 31, 2014	746	[2],[3]
Year Ended December 31, 2015	275	[2],[3]
Year Ended December 31, 2016	167	[2],[3]
Year Ended December 31, 2017	137	[2],[3]
Year Ended December 31, 2018	110	[2],[3]
Thereafter	1,194	[2],[3]
Total	$ 2,629	[2],[3]

[1] Includes unconditional purchase obligations related to agreements to acquire and license digital video content that represent long-term liabilities or are not reflected on the consolidated balance sheets. For those agreements with variable terms, we do not estimate what the total obligation may be beyond any minimum quantities and/or pricing as of the reporting date. Purchase obligations associated with renewal provisions solely at the option of the content provider are included to the extent such commitments are fixed or a minimum amount is specified.

[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 $407 million of tax contingencies for which we cannot make a reasonably reliable estimate of the amount and period of payment, if any