Acquisition and Dispositions - Amounts Incurred and Amounts Expected to be Incurred in Future by Major Type of Cost and by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	$ 1,263	$ 7,388
Incurred from restructuring inception to June 30, 2014		43,115
Estimate of Remaining Amounts to be incurred		21,885
Total		65,000
Americas [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	932	4,563
Incurred from restructuring inception to June 30, 2014		38,629
Estimate of Remaining Amounts to be incurred		14,371
Total		53,000
Americas [Member] | Impairments and write offs [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	(1,340)	(1,340)
Incurred from restructuring inception to June 30, 2014		12,823
Estimate of Remaining Amounts to be incurred		677
Total		13,500
Americas [Member] | Severance and other personnel-related costs [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	1,225	3,254
Incurred from restructuring inception to June 30, 2014		12,899
Estimate of Remaining Amounts to be incurred		601
Total		13,500
Americas [Member] | Morgan City yard-related expenses [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	1,047	2,649
Incurred from restructuring inception to June 30, 2014		6,824
Estimate of Remaining Amounts to be incurred		8,426
Total		15,250
Americas [Member] | Other [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	0	0
Incurred from restructuring inception to June 30, 2014		158
Estimate of Remaining Amounts to be incurred		4,667
Total		4,825
Americas [Member] | Morgan City environmental reserve [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	0	0
Incurred from restructuring inception to June 30, 2014		5,925
Total		5,925
Corporate [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	331	2,825
Incurred from restructuring inception to June 30, 2014		4,486
Estimate of Remaining Amounts to be incurred		7,514
Total		12,000
Corporate [Member] | Severance and other personnel-related costs [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	0	908
Incurred from restructuring inception to June 30, 2014		2,569
Estimate of Remaining Amounts to be incurred		1,931
Total		4,500
Corporate [Member] | Legal and other advisor fees [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Incurred for the quarter	331	1,917
Incurred from restructuring inception to June 30, 2014		1,917
Estimate of Remaining Amounts to be incurred		5,583
Total		$ 7,500