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Subsequent Events - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified |
1 Months Ended | 3 Months Ended | 1 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 07, 2012
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Nov. 28, 2012
Subsequent Event
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Feb. 25, 2013
Subsequent Event
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Dec. 07, 2012
Subsequent Event
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Dec. 07, 2012
Subsequent Event
0.650% Senior Notes due December 7, 2015
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Dec. 07, 2012
Subsequent Event
0.650% Senior Notes due December 7, 2015
First Payment
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Dec. 07, 2012
Subsequent Event
1.125% Senior Notes due December 15, 2017
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Dec. 07, 2012
Subsequent Event
1.125% Senior Notes due December 15, 2017
First Payment
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Dec. 07, 2012
Subsequent Event
1.700% Senior Notes due December 15, 2019
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Dec. 07, 2012
Subsequent Event
1.700% Senior Notes due December 15, 2019
First Payment
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Nov. 28, 2012
Subsequent Event
401(k) Retirement Plan
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| Subsequent Event [Line Items] | |||||||||||
| Special cash dividend declared, per share | $ 7.00 | ||||||||||
| Special dividend paid | $ 3,049 | ||||||||||
| Special cash dividend declared, declared date | Nov. 28, 2012 | ||||||||||
| Special cash dividend declared, payable date | Dec. 18, 2012 | ||||||||||
| Special cash dividend declared, record date | Dec. 10, 2012 | ||||||||||
| Ownership of employee, shares | 22,600,000 | ||||||||||
| Discrete income tax benefit | 62 | ||||||||||
| Senior note | 3,500 | 1,200 | 1,100 | 1,200 | |||||||
| Senior note, interest rate | 0.65% | 1.125% | 1.70% | ||||||||
| Debt instrument frequency of periodic payment | Interest is due semi-annually on June 7 and December 7, with the first payment due on June 7, 2013 | Interest is due semi-annually on June 15 and December 15, with the first payment due on June 15, 2013 | Interest is due semi-annually on June 15 and December 15, with the first payment due on June 15, 2013 | ||||||||
| Debt instrument maturity date | Jun. 07, 2013 | Jun. 15, 2013 | Jun. 15, 2013 | ||||||||
| General corporate expense | $ 450 | ||||||||||