v3.6.0.2

Provision for Income Taxes - Expiration of Tax Loss Carryforwards (Detail) $ in Millions	Dec. 31, 2016 USD ($)
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	$ 1,899
2017 Tax Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	26
2018 Tax Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	10
2019 Tax Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	29
2020 Tax Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	10
2021 Tax Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	1
2022-2026 Tax Loss Credit Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	947
Later Tax Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	290
Unlimited Tax Credit Loss Carryforwards [Member]
Operating Loss Carryforwards [Line Items]
Tax loss carryforwards	$ 586

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319

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+ References

No definition available.

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