Pension and Postretirement Benefit Plans - Opening Paragraph Narrative (Details) - U.S. Defined Contribution Plan	9 Months Ended
Sep. 30, 2016
Schedule Of Defined Contribution Plans Disclosures
Company match of eligible compensation, high end of range	5.00%
Company match of employee contribution, percent for employees hired on or after January 1, 2009	100.00%
Company contribution to employer retirement income account for employees hired on or after January 1, 2009	3.00%
Maximum
Schedule Of Defined Contribution Plans Disclosures
Employer match of employee contributions, pre January 1, 2009	60.00%
Minimum
Schedule Of Defined Contribution Plans Disclosures
Employer match of employee contributions, pre January 1, 2009	45.00%

Represents the employer matching contribution of the employee contributions for employees hired after January 1, 2009.

No definition available.

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- Definition

Represents the employer matching contribution of the employee contributions for employees hired prior to January 1, 2009.

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No definition available.

+ Details

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- Definition

For a defined contribution postretirement plan, the percentage of eligible compensation which the entity will contribute for employees hired after January 1, 2009.

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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.

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No definition available.

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

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No definition available.

+ Details

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- Details

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- Details

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- Details

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