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Restructuring - Restructuring Activities and Related Reserves (Detail) - USD ($) $ in Millions | 3 Months Ended
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Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017
Restructuring Cost And Reserve [Line Items] |  |  |
Reserve balance | $ 3 | $ 3 | $ 3
Charges (gain) | 1 | (9) | 1
Accrual for deposit on sale of land | (3) |  | (4)
Costs charged against assets / (liabilities) |  | 1 |
Cash (paid) received | 1 | 8 | 3
Reserve balance | 2 | 3 | 3
Severance and Employee Benefits [Member] |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Reserve balance | 1 | 1 | 1
Charges (gain) |  | 1 |
Cash (paid) received | (1) | (1) |
Reserve balance |  | 1 | 1
Environmental Remediation [Member] |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Reserve balance | 2 | 2 | 2
Charges (gain) | 1 |  |
Cash (paid) received | (1) |  |
Reserve balance | 2 | 2 | 2
Asset Sales [Member] |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Charges (gain) |  | (11) |
Accrual for deposit on sale of land | (3) |  | (4)
Costs charged against assets / (liabilities) |  | 2 |
Cash (paid) received | $ 3 | 9 | 4
Other [Member] |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Charges (gain) |  |  | 1
Cash (paid) received |  |  | $ (1)
Asset Impairment and Accelerated Depreciation [Member] |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |
Charges (gain) |  | 1 |
Costs charged against assets / (liabilities) |  | $ (1) |

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- Definition Payments for proceeds from restructuring. + References No definition available. + Details
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- Definition Restructuring charges (credit). + References No definition available. + Details
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- 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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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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- Definition Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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