Retirement Benefits - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013 Investment	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations in excess of plan assets, projected benefit obligation		$ 204,300,000
Accumulated benefit obligations in excess of plan assets, fair value of plan assets		139,600,000
Accumulated benefit obligation, pension benefit plans	606,100,000	638,000,000
Accumulated benefit obligations in excess of plan assets, accumulated benefit obligation		193,600,000
Multi employer pension plan contributions	6,162,000	6,398,000	6,027,000
Defined contribution plans contributions charged to expense	7,800,000	7,600,000	8,000,000
Target Allocation	100.00%
Plan assets held under management by single investment company	99.00%
Number of commingled debt and equity index funds	6
Number of asset funds	4
Voluntary contributions to Domestic Pension Benefit Plans		76,000,000
United States
Defined Benefit Plan Disclosure [Line Items]
Equity securities, target allocation as percentage of total equity securities	85.00%
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	58.00%
Equity Securities | United States
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	49.00%
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	42.00%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Multi Employer Funded Status	65.00%
Projected Benefit Obligation In Excess Of Plan Assets
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations in excess of plan assets, projected benefit obligation		204,300,000
Accumulated benefit obligations in excess of plan assets, fair value of plan assets		139,600,000
Unfunded International Defined Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations in excess of plan assets, projected benefit obligation	61,100,000	57,200,000
Accumulated benefit obligations in excess of plan assets, accumulated benefit obligation	$ 56,500,000	$ 52,600,000
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation discount rate	3.70%	3.60%
Benefit obligation rate of compensation increase	3.50%	3.50%
Net periodic benefit cost discount rate	3.60%	4.90%	5.50%
Net periodic benefit cost rate of compensation increase	3.50%	3.50%	3.50%