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Accounting Policies - Schedule of Range of Estimated Service Lives (Detail) | 12 Months Ended
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Dec. 31, 2018
Minimum [Member] | Buildings [Member] |
Property, Plant and Equipment [Line Items] |
Range of estimated service lives | 15 years
Minimum [Member] | Machinery and Equipment [Member] |
Property, Plant and Equipment [Line Items] |
Range of estimated service lives | 5 years
Minimum [Member] | Other [Member] |
Property, Plant and Equipment [Line Items] |
Range of estimated service lives | 3 years
Maximum [Member] | Buildings [Member] |
Property, Plant and Equipment [Line Items] |
Range of estimated service lives | 45 years
Maximum [Member] | Machinery and Equipment [Member] |
Property, Plant and Equipment [Line Items] |
Range of estimated service lives | 40 years
Maximum [Member] | Other [Member] |
Property, Plant and Equipment [Line Items] |
Range of estimated service lives | 25 years

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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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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