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Employee Benefit Plans - Composition of Pension Plan Assets (Detail) - Defined Benefit Pension Plans - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | $ 430.1 | $ 479.1 |
Other Pension Plans, Defined Benefit |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 21.7 | 22.1 |
Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 146.3 | 171.4 |
Level 1 | Other Pension Plans, Defined Benefit |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 14.0 | 14.3 |
Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 47.6 | 53.6 |
Level 3 Inputs |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 236.2 | 254.1 | $ 261.5
Level 3 Inputs | Other Pension Plans, Defined Benefit |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 7.7 | 7.8 |
Germany |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 223.1 | 240.7 |
Germany | Level 3 Inputs |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 223.1 | 240.7 |
Canada | Local Currency Equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 9.6 | 12.4 |
Canada | Foreign Equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 23.3 | 34.4 |
Canada | Local Currency Fixed Income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 50.6 | 50.3 |
Canada | Global Mutual Fund |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 6.8 | 10.1 |
Canada | Cash and Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0.5 | 0.6 |
Canada | Level 1 | Local Currency Equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 9.6 | 12.4 |
Canada | Level 1 | Foreign Equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 23.3 | 34.4 |
Canada | Level 1 | Local Currency Fixed Income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 50.6 | 50.3 |
Canada | Level 1 | Global Mutual Fund |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 6.8 | 10.1 |
Canada | Level 1 | Cash and Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0.5 | 0.6 |
Norway | Local Currency Equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 2.0 | 1.9 |
Norway | Foreign Equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 3.6 | 5.1 |
Norway | Local Currency Fixed Income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 24.5 | 29.3 |
Norway | Cash and Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 7.9 | 10.3 |
Norway | Foreign Fixed Income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 4.7 | 3.8 |
Norway | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 4.2 | 4.5 |
Norway | Level 1 | Local Currency Equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 2.0 | 1.9 |
Norway | Level 1 | Foreign Equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 3.6 | 5.1 |
Norway | Level 1 | Local Currency Fixed Income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 24.5 | 29.3 |
Norway | Level 1 | Cash and Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 6.7 | 9.2 |
Norway | Level 1 | Foreign Fixed Income |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 4.7 | 3.8 |
Norway | Level 3 Inputs | Cash and Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 1.2 | 1.1 |
Norway | Level 3 Inputs | Real estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 4.2 | 4.5 |
United States | CMRT |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 47.6 | 53.6 |
United States | Level 2 | CMRT |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | $ 47.6 | $ 53.6 |

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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