Employee Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Contributions	$ 34	$ 39	$ 34
Amortized from accumulated other comprehensive income into net periodic benefit cost	6
Net actuarial loss of accumulated other comprehensive income into net periodic benefit cost	5
Prior service cost of accumulated other comprehensive income into net periodic benefit cost	1
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Benefit Obligation	421
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	243
Percentage of investment for long-term growth	65.00%
Percentage of near-term benefit payments	35.00%
Estimated future benefit payments, 2014	23
Estimated future benefit payments, 2015	25
Estimated future benefit payments, 2016	25
Estimated future benefit payments, 2017	26
Estimated future benefit payments, 2018	29
Estimated future benefit payments, 2019 to 2023	158
Contribution to multiemployer plans	9	8	9
Equity Securities [Member]
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%	7.50%	7.50%
Projected benefit obligation in excess of the fair value of plan assets contributions	1
Non-U.S. Pension Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on plan assets	5.30%	5.25%	5.35%
Projected benefit obligation in excess of the fair value of plan assets contributions	$ 11

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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Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

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

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Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of benefits from a defined benefit plan expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

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Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

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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.

+ References

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-Publisher FASB

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-SubTopic 20

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

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- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for plans with 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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