|
Net Sales of Similar Products and Services (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Mar. 31, 2013
|
Mar. 31, 2012
|
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| Revenue from External Customer [Line Items] | ||||||
| Net sales | $ 16,070 | $ 13,185 | ||||
|
Media
|
||||||
| Revenue from External Customer [Line Items] | ||||||
| Net sales | 5,058 | 4,710 | ||||
|
Electronics and other general merchandise
|
||||||
| Revenue from External Customer [Line Items] | ||||||
| Net sales | 10,214 | 7,975 | ||||
|
Other
|
||||||
| Revenue from External Customer [Line Items] | ||||||
| Net sales | $ 798 | [1] | $ 500 | [1] | ||
|
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