Defined Contribution and Defined Benefit Retirement - Composition of Pension Plan Assets (Detail) - Pension Plans Defined Benefit [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 429.6	$ 533.9
Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	114.9	155.1
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	14.8	9.2
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	264.8	320.5	$ 314.8
Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Plan assets	35.1	49.1
Non U.S.
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 390.5	$ 481.5	$ 494.8
Long-term return on plan assets	2.50%	2.40%	2.00%
Germany
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 234.0	$ 282.9
Germany | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	234.0	282.9
Canada | Local Currency Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.1	0.2
Canada | Non Local Currency Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11.0	21.9
Canada | Local Currency Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	72.9	89.3
Canada | Cash and Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.6	0.8
Canada | Quoted Prices in Active Markets (Level 1) | Local Currency Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.1	0.2
Canada | Quoted Prices in Active Markets (Level 1) | Non Local Currency Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11.0	21.9
Canada | Quoted Prices in Active Markets (Level 1) | Local Currency Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	72.9	89.3
Canada | Quoted Prices in Active Markets (Level 1) | Cash and Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.6	0.8
Norway | Local Currency Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	2.3	3.1
Norway | Non Local Currency Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4.7	5.9
Norway | Local Currency Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	21.8	25.1
Norway | Cash and Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	2.7	7.0
Norway | Non Local Currency Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	8.4	6.7
Norway | Real Estate.
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 7.8	9.1
Long-term return on plan assets	6.00%
Norway | Quoted Prices in Active Markets (Level 1) | Local Currency Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 2.3	3.1
Norway | Quoted Prices in Active Markets (Level 1) | Non Local Currency Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4.7	5.9
Norway | Quoted Prices in Active Markets (Level 1) | Local Currency Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	7.0	15.9
Norway | Quoted Prices in Active Markets (Level 1) | Cash and Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	2.4	6.4
Norway | Quoted Prices in Active Markets (Level 1) | Non Local Currency Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	8.4	6.7
Norway | Significant Other Observable Inputs (Level 2) | Local Currency Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	14.8	9.2
Norway | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan asset allocation			17.00%
Norway | Significant Unobservable Inputs (Level 3) | Cash and Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0.3	0.6
Norway | Significant Unobservable Inputs (Level 3) | Real Estate.
Defined Benefit Plan Disclosure [Line Items]
Plan assets	7.8	9.1
Other.
Defined Benefit Plan Disclosure [Line Items]
Plan assets	24.2	29.6
Other. | Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.5	1.8
Other. | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan assets	22.7	27.8
United States
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 39.1	$ 52.4	$ 53.3
Long-term return on plan assets	4.00%	4.00%	4.50%
United States | Cash and Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 3.8	$ 3.2
United States | Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	12.4	18.5
United States | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 22.9	30.6
United States | Multi-asset
Defined Benefit Plan Disclosure [Line Items]
Long-term return on plan assets	4.00%
United States | Quoted Prices in Active Markets (Level 1) | Cash and Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 2.8	1.9
United States | Quoted Prices in Active Markets (Level 1) | Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1.0	1.2
United States | Quoted Prices in Active Markets (Level 1) | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 0.2
United States | Significant Unobservable Inputs (Level 3) | Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets		0.1
United States | Assets measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Percentage of plan asset allocation	90.00%
United States | Assets measured at NAV | Cash and Other
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 1.0	1.3
United States | Assets measured at NAV | Equities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11.4	17.2
United States | Assets measured at NAV | Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 22.7	$ 30.6