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Employee Benefit Plans - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Employee waiting period after hire to participate in the defined contribution plans		90 days
Employee maximum contribution towards defined contribution plans as percentage of annual compensation		50.00%	25.00%
Employee maximum contribution towards defined contribution plans as percentage of annual incentive plan bonus		80.00%
Employer's match in cash of non-union employee contributions on first specified percentage of eligible compensation		100.00%
First percentage of eligible compensation on which specified percentage of non-union employee contribution is matched by the employer in cash		3.00%
Employer's match in cash of non-union employee contributions on next specified percentage of eligible compensation		50.00%
Next percentage of eligible compensation on which specified percentage of non-union employee contribution is matched by the employer in cash		3.00%
Employer maximum match of non-union employee contribution on eligible compensation		4.50%
Operating, selling, general and administrative expenses for our defined contribution plans		$ 64,000,000	$ 61,000,000	$ 63,000,000
Accrued benefit liabilities for defined benefit pension and other post retirement plans		37,000,000	56,000,000
Contributions to Multiemployer Plan		47,000,000	43,000,000	44,000,000
Multiemployer Health and Welfare Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions to Multiemployer Plan		40,000,000	33,000,000	34,000,000
Withdrawal from Multiemployer Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Charge to "Operating" expenses	$ 55,000,000	0	51,000,000	$ 4,000,000
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Combined accumulated benefit obligation of pension plans		114,000,000	116,000,000
Plan assets of pension plans		103,000,000	88,000,000
Unfunded benefit obligation		11,000,000	28,000,000
Other Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Unfunded benefit obligation		$ 26,000,000	$ 28,000,000

X

- Definition

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accumulated Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503844

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-Topic 715
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-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

+ References

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-URI http://asc.fasb.org/extlink&oid=6749337

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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

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

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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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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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans.

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Employee maximum contribution towards defined contribution plans as percentage of annual incentive plan

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