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Employee Benefits, Net Periodic Benefit Costs and Charges Relating To Other Benefit Plans(Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Net Periodic Benefit Costs and Charges Relating to Other Benefit Plans |  |  |  |
Non-cash net periodic benefit income | [1] | $ 3.7 | $ 2.8 | $ (23.5)
Total |  | 18.1 | 509.6 | (10.4)
Fabricated Products |  |  |  |
Net Periodic Benefit Costs and Charges Relating to Other Benefit Plans |  |  |  |
Deferred Compensation Arrangement with Individual, Compensation Expense |  | 0.2 | 0.1 | 0.2
Defined contribution plans |  | 8.1 | 7.8 | 7.3
Total |  | 13.3 | 12.7 | 11.8
All Other |  |  |  |
Net Periodic Benefit Costs and Charges Relating to Other Benefit Plans |  |  |  |
Deferred Compensation Arrangement with Individual, Compensation Expense |  | 0.7 | 0.3 | 0.7
Defined contribution plans |  | 0.8 | 0.8 | 0.8
Total |  | 4.8 | 496.9 | (22.2)
Canadian pension plan | Fabricated Products |  |  |  |
Net Periodic Benefit Costs and Charges Relating to Other Benefit Plans |  |  |  |
Non-cash net periodic benefit income |  | 0.3 | 0.4 | 0.3
VEBAs | All Other |  |  |  |
Net Periodic Benefit Costs and Charges Relating to Other Benefit Plans |  |  |  |
Non-cash net periodic benefit income |  | $ 3.4 | $ 2.4 | $ (23.7)
[1] | See Note 6 for the impact of removing the Union VEBA (defined in Note 6) net assets.

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- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=65897934&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 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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