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.

No definition available.

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- Definition

Description of target allocation percentages, or range of percentages, considering the major categories of plan assets as of the latest statement of financial position presented (on a weighted-average basis for employers with more than one plan) that are pertinent to an understanding of the plan investment policies and strategies.

+ 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)(i)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2446-114920

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- Definition

Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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- Details

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Retirement Benefit Plans - Asset Allocations (Details) - Pension Plan [Member]	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
United States
Defined Benefit Plan Disclosure [Line Items]
Asset allocations	100.00%	100.00%
United States \| Real estate and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations	11.00%	9.00%
United States \| Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations	53.00%	50.00%
United States \| Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations	36.00%	41.00%
Non-US [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations	100.00%	100.00%
Non-US [Member] \| Real estate and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations	8.00%	5.00%
Non-US [Member] \| Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations	44.00%	47.00%
Non-US [Member] \| Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations	48.00%	48.00%
Minimum [Member] \| United States \| Real estate and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0
Minimum [Member] \| United States \| Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.45
Minimum [Member] \| United States \| Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.25
Minimum [Member] \| Non-US [Member] \| Real estate and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0
Minimum [Member] \| Non-US [Member] \| Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.43
Minimum [Member] \| Non-US [Member] \| Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.46
Maximum [Member] \| United States \| Real estate and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.15
Maximum [Member] \| United States \| Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.65
Maximum [Member] \| United States \| Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.45
Maximum [Member] \| Non-US [Member] \| Real estate and other [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.1
Maximum [Member] \| Non-US [Member] \| Fixed income securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.53
Maximum [Member] \| Non-US [Member] \| Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Allocation Percentage	0.56