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Pension and Other Postretirement Benefits (Summary of Strategic Ranges for Assets Allocation Plan) (Details) | 12 Months Ended
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Dec. 31, 2016
U.S. Plans [Member] | Equities [Member] | United States [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 30.00%
Target plan asset allocations, maximum | 40.00%
U.S. Plans [Member] | Equities [Member] | International [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 10.00%
Target plan asset allocations, maximum | 15.00%
U.S. Plans [Member] | Fixed income [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 15.00%
Target plan asset allocations, maximum | 25.00%
U.S. Plans [Member] | Balance funds [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 10.00%
Target plan asset allocations, maximum | 20.00%
U.S. Plans [Member] | Real estate [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 5.00%
Target plan asset allocations, maximum | 10.00%
U.S. Plans [Member] | Private equity [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 5.00%
Target plan asset allocations, maximum | 10.00%
Non-U.S. Plans [Member] | Investment grade credit [Member] | United Kingdom [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 40.00%
Target plan asset allocations, maximum | 80.00%
Non-U.S. Plans [Member] | Equities [Member] | United Kingdom [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 0.00%
Target plan asset allocations, maximum | 30.00%
Non-U.S. Plans [Member] | Hedge funds [Member] | United Kingdom [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 0.00%
Target plan asset allocations, maximum | 10.00%
Non-U.S. Plans [Member] | Real estate [Member] | United Kingdom [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 0.00%
Target plan asset allocations, maximum | 5.00%
Non-U.S. Plans [Member] | Private equity [Member] | United Kingdom [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 0.00%
Target plan asset allocations, maximum | 15.00%
Non-U.S. Plans [Member] | Emerging market wealth [Member] | United Kingdom [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 0.00%
Target plan asset allocations, maximum | 15.00%
Non-U.S. Plans [Member] | Alternative credit [Member] | United Kingdom [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 0.00%
Target plan asset allocations, maximum | 15.00%
Non-U.S. Plans [Member] | Other [Member] | United Kingdom [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Target plan asset allocations, minimum | 0.00%
Target plan asset allocations, maximum | 5.00%

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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 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=65897934&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=65897934&loc=d3e1928-114920 + Details
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