Defined Benefit Plan, Number of Years that Rate Reaches Ultimate Trend Rate

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- Definition

defined benefit plan, ultimate health care cost trend rates, with added benefits such as an HRA

+ References

No definition available.

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- Definition

Funded Percentage of Pension Protection Plan

+ References

No definition available.

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- Definition

Hourly Pension Plan Single Lump Sum Payments

+ References

No definition available.

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- Definition

Multiemployer Defined Benefit Plans Contribution Rate

+ References

No definition available.

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- Definition

Salaried Pension Plan Single Lump Sum Payments

+ References

No definition available.

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- Definition

The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement.

+ References

No definition available.

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- Definition

Amount of contributions made by the employer to defined benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(ii)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Section 35
-Paragraph 123
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-URI http://asc.fasb.org/extlink&oid=64937487&loc=d3e36068-114959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=64937038&loc=d3e12551-114930

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 1
-Subparagraph (d)(5)(iv)(01)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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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.

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- Definition

Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=64937038&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Plan Assets
-URI http://asc.fasb.org/extlink&oid=6749337

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Plan Assets
-URI http://asc.fasb.org/extlink&oid=6520858

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- Definition

Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

+ Details

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- Definition

Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

+ Details

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- Definition

The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Health Care Cost Trend Rate
-URI http://asc.fasb.org/extlink&oid=6514820

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

The amount of decrease that relates to an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 15
-Paragraph 6
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-URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

The ultimate trend rate for health care costs.

+ References

+ Details

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ References

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- Definition

Amount of the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

No definition available.

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- Definition

Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss related to net period benefit cost (credit) for pension and other postretirement defined benefit plans.

+ References

No definition available.

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Savings, Pension and Other Postretirement Employee Benefit Plans Additional Information (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) $ / h	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Employer contributions		$ 16,900,000
Multiemployer Plans, Withdrawal Obligation	$ 78,000,000
Salaried Pension Plan Single Lump Sum Payments		10,600,000
Hourly Pension Plan Single Lump Sum Payments		4,800,000
Defined Benefit Plan, Settlements, Benefit Obligation		3,500,000
IAM
Defined Benefit Plan Disclosure [Line Items]
Contribution rates \| $ / h	4.0
USW
Defined Benefit Plan Disclosure [Line Items]
Contribution rates \| $ / h	2.79
Maximum \| Plan A [Member]
Defined Benefit Plan Disclosure [Line Items]
Funded Percentage Of Pension Protection Plan	65.00%
Maximum \| Plan B [Member]
Defined Benefit Plan Disclosure [Line Items]
Funded Percentage Of Pension Protection Plan	80.00%
Minimum \| Plan B [Member]
Defined Benefit Plan Disclosure [Line Items]
Funded Percentage Of Pension Protection Plan	65.00%
Minimum \| Plan C [Member]
Defined Benefit Plan Disclosure [Line Items]
Funded Percentage Of Pension Protection Plan	80.00%
Pension Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Net loss expected to be recognized as component of net periodic benefit over the next fiscal year	$ (10,300,000)
Fair value of plan assets	310,966,000	285,638,000	$ 294,076,000
Employer contribution	454,000	421,000
Defined Benefit Plan, Settlements, Benefit Obligation	0	3,482,000	0
Other Postretirement Employee Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Net loss expected to be recognized as component of net periodic benefit over the next fiscal year	(900,000)
Prior service cost, expected to be recognized as a component of net periodic benefit cost over the next fiscal year	$ 1,700,000
Assumed health care cost trend rates used to determine the company's benefit obligations and expense	7.40%
Assumed health care cost trend rates, graded rate	6.70%
Expected year when trend rate to be reached	70 years
Fair value of plan assets	$ 20,000	20,000	20,000
Employer contribution	5,689,000	6,649,000
Defined Benefit Plan, Settlements, Benefit Obligation	$ 0	0	0
Other Postretirement Employee Benefit Plans \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Assumed health care cost trend rates, graded rate	4.00%
defined benefit plan, ultimate health care cost trend rates, with added benefits	2.50%
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contribution	$ 500,000
Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contribution	0
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	0
Fair Value, Inputs, Level 1 \| Other Postretirement Employee Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	20,000	20,000
Pension Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	16,600,000		$ 16,900,000
Cost of Sales [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	600,000	3,000,000
Selling, General and Administrative Expenses [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	$ 400,000	$ 2,300,000