Employee Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Contributions	$ 34	$ 15	$ 9
Amortized from accumulated other comprehensive income into net periodic benefit cost	14
Net actuarial loss of accumulated other comprehensive income into net periodic benefit cost	13
Prior service cost of accumulated other comprehensive income into net periodic benefit cost	1
Percentage of investment for long-term growth	65.00%
Percentage of near-term benefit payments	35.00%
Estimated future benefit payments, 2013	21
Estimated future benefit payments, 2014	22
Estimated future benefit payments, 2015	23
Estimated future benefit payments, 2016	25
Estimated future benefit payments, 2017	25
Estimated future benefit payments, 2018 to 2022	147
Contribution to multiemployer plans	9	6	8
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets allocation, minimum	45.00%
Percentage of plan assets allocation, maximum	65.00%
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan assets allocation, minimum	30.00%
Percentage of plan assets allocation, maximum	40.00%
U.S. Pension Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on plan assets	7.50%	8.00%	8.25%
Projected benefit obligation in excess of the fair value of plan assets contributions	6
Non-U.S. Pension Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on plan assets	5.35%	5.25%	6.75%
Projected benefit obligation in excess of the fair value of plan assets contributions	$ 10

Defined benefit plan, investment for long-term growth, percentage

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Defined benefit plan, short-term benefit payments, percentage

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The amounts in accumulated other comprehensive income related to gains and losses that are not recognized immediately and are expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

+ References

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-Name Accounting Standards Codification

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The amounts in accumulated other comprehensive income related to prior service cost or credit expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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The aggregate amount in accumulated other comprehensive income expected to be recognized as a component of net periodic benefit cost over the fiscal year that follows the most recent annual statement of financial position presented, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation.

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

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-Glossary Expected Long-Term Rate of Return on Plan Assets

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Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan.

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Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

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- Definition

If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis.

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Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis.

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The amount of the cost recognized during the period for defined contribution plans.

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Amount of contributions made to multiemployer plans by the employer. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

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