Restructuring - 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
	Mar. 31, 2015	Mar. 31, 2014
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	$ 10,389	$ 6,125
Incurred from inception to March 31, 2015	64,229
Estimate of remaining amounts to be incurred	23,475
Total	87,704
Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	1,795	3,631
Incurred from inception to March 31, 2015	45,031
Estimate of remaining amounts to be incurred	4,002
Total	49,033
Corporate Restructuring
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter		2,494
Incurred from inception to March 31, 2015	6,601
Total	6,601
MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	8,594
Incurred from inception to March 31, 2015	12,597
Estimate of remaining amounts to be incurred	19,473
Total	32,070
Impairments and write offs [Member] | Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred from inception to March 31, 2015	12,923
Total	12,923
Severance and other personnel-related costs [Member] | Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	881	2,029
Incurred from inception to March 31, 2015	14,261
Total	14,261
Severance and other personnel-related costs [Member] | Corporate Restructuring
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter		908
Incurred from inception to March 31, 2015	2,599
Total	2,599
Morgan City yard-related expenses [Member] | Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	914	1,602
Incurred from inception to March 31, 2015	11,764
Estimate of remaining amounts to be incurred	4,002
Total	15,766
Other [Member] | Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred from inception to March 31, 2015	158
Total	158
Other [Member] | Corporate Restructuring
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred from inception to March 31, 2015	798
Total	798
Legal and other advisor fees [Member] | Corporate Restructuring
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter		1,586
Incurred from inception to March 31, 2015	3,204
Total	3,204
Legal and other advisor fees [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred from inception to March 31, 2015	4,000
Morgan City environmental reserve [Member] | Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred from inception to March 31, 2015	5,925
Total	5,925
AEA Segment [Member] | Severance and other personnel-related costs [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	1,252
Incurred from inception to March 31, 2015	1,252
Estimate of remaining amounts to be incurred	3,877
Total	5,129
MEA Segment [Member] | Severance and other personnel-related costs [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	607
Incurred from inception to March 31, 2015	607
Estimate of remaining amounts to be incurred	3,300
Total	3,907
ASA Segment [Member] | Severance and other personnel-related costs [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	1,800
Incurred from inception to March 31, 2015	1,800
Estimate of remaining amounts to be incurred	5,329
Total	7,129
ASA Segment [Member] | Asset impairment [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	4,168
Incurred from inception to March 31, 2015	4,168
Total	4,168
Corporate and Other [Member] | Severance and other personnel-related costs [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	719
Incurred from inception to March 31, 2015	719
Estimate of remaining amounts to be incurred	6,967
Total	7,686
Corporate [Member] | Legal and other advisor fees [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	48
Incurred from inception to March 31, 2015	4,051
Total	$ 4,051