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Employee Benefit Plans - Future Benefit Payments of Defined Benefit Pension and Other Post-Retirement Benefit Plans (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2013
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|---|---|
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Defined Benefit Pension Plans [Member]
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| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |
| 2014 | $ 29 |
| 2015 | 32 |
| 2016 | 34 |
| 2017 | 37 |
| 2018 | 42 |
| Five years thereafter | 299 |
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Post-Retirement Benefit Plans [Member]
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| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |
| 2014 | |
| 2015 | |
| 2016 | |
| 2017 | 1 |
| 2018 | 1 |
| Five years thereafter | $ 1 |