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Employee Benefits - Investment Policy and Strategy Narrative (Details) | 12 Months Ended
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Dec. 31, 2015
U.S. Pension Plan [Member] | Equity investments [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Target allocation percentage | 49.00%
U.S. Pension Plan [Member] | Fixed income investments [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Target allocation percentage | 30.00%
U.S. Pension Plan [Member] | Other Investments |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Target allocation percentage | 21.00%
U.K. and Non-U.S. Pension Plan [Member] | Equity investments [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Actual allocation percentage | 20.00%
U.K. and Non-U.S. Pension Plan [Member] | Fixed income investments [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Actual allocation percentage | 80.00%

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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 + Details
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