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New Accounting Pronouncements - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
ASU 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in tax expense	$ 4
ASU 2016-09 [Member] | Retained Earnings (Loss) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative impact on retained earnings	1
ASU 2016-16 [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction in retained earnings and receivables	$ 5

X

- Definition

Increase decrease in income tax expense.

+ References

No definition available.

+ Details

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X

- Definition

Reduction in retained earnings and receivables.

+ References

No definition available.

+ Details

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X

- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

+ References

No definition available.

+ Details

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X

- Definition

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.

+ References

No definition available.

+ Details

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- Details

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- Details

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X

- Details

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- Details

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