Pension and Other Postretirement Employee Benefit Plans - Weighted Average Asset Allocation (Details)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
U.S. defined benefit pension plans
Asset category
Target plan asset allocations	100.00%
Actual plan asset allocations	100.00%	100.00%
U.S. defined benefit pension plans \| Debt securities
Asset category
Target Allocation, Minimum	0.00%
Target Allocation, Maximum	80.00%
Actual plan asset allocations	32.00%	31.00%
U.S. defined benefit pension plans \| Equity securities
Asset category
Target Allocation, Minimum	0.00%
Target Allocation, Maximum	85.00%
Actual plan asset allocations	48.00%	46.00%
U.S. defined benefit pension plans \| Real estate
Asset category
Target Allocation, Minimum	0.00%
Target Allocation, Maximum	10.00%
Actual plan asset allocations	4.00%	4.00%
U.S. defined benefit pension plans \| Alternatives
Asset category
Target Allocation, Minimum	0.00%
Target Allocation, Maximum	35.00%
Actual plan asset allocations	16.00%	19.00%
Non-U.S. defined benefit pension plans
Asset category
Target plan asset allocations	100.00%
Actual plan asset allocations	100.00%	100.00%
Non-U.S. defined benefit pension plans \| Debt securities
Asset category
Target plan asset allocations	59.00%
Actual plan asset allocations	60.00%	61.00%
Non-U.S. defined benefit pension plans \| Equity securities
Asset category
Target plan asset allocations	40.00%
Actual plan asset allocations	38.00%	38.00%
Non-U.S. defined benefit pension plans \| Real estate
Asset category
Target plan asset allocations	0.00%
Actual plan asset allocations	1.00%	0.00%
Non-U.S. defined benefit pension plans \| Alternatives
Asset category
Target plan asset allocations	1.00%
Actual plan asset allocations	1.00%	1.00%
OPEB plans
Asset category
Target plan asset allocations	100.00%
Actual plan asset allocations	100.00%	100.00%
OPEB plans \| Debt securities
Asset category
Target Allocation, Minimum	30.00%
Target Allocation, Maximum	70.00%
Actual plan asset allocations	50.00%	50.00%
OPEB plans \| Equity securities
Asset category
Target Allocation, Minimum	30.00%
Target Allocation, Maximum	70.00%
Actual plan asset allocations	50.00%	50.00%
OPEB plans \| Real estate
Asset category
Target plan asset allocations	0.00%
Actual plan asset allocations	0.00%	0.00%
OPEB plans \| Alternatives
Asset category
Target plan asset allocations	0.00%
Actual plan asset allocations	0.00%	0.00%

Asset category.

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- Definition

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ 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)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&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)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

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- Definition

Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ References

+ Details

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- Definition

Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ 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=58740216&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=58740216&loc=d3e2446-114920

+ Details

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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=58740216&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=58740216&loc=d3e1928-114920

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