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