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Contingencies and Environmental Liabilities - Commercial and Other Litigation- Narrative (Details) - Commercial Litigation $ in Millions			1 Months Ended	12 Months Ended
	Oct. 01, 2018 USD ($) legalmatter	Apr. 29, 2016 legalmatter	Jan. 31, 2014 legalmatter	Dec. 31, 2018 legalmatter
Loss Contingencies [Line Items]
Additional claims filed		1	4
Loss contingency, pending claims number				700
Settlement awarded to other party | $	$ 8.5
Minimum plaintiffs opting out for opt-out clause in settlement award	30
Number of plaintiffs				2
Loss contingency, claims on appeal, number				2

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- Definition

Loss Contingencies, Minimum Plaintiffs Opting Out for Opt-Out Clause in Settlement Award, Number

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Loss Contingency, Claims on Appeal, Number

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Amount awarded to other party in judgment or settlement of litigation.

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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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The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

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Number of plaintiffs that have filed claims pertaining to a loss contingency.

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Number of pending claims pertaining to a loss contingency.

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-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
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