Restructuring - Restructuring Costs Incurred and Future Cost Expected to be Incurred (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	$ 40,819	$ 18,113	$ 35,727
Incurred from inception to December 31, 2015	94,659
Estimate of remaining amounts to be incurred	11,000
Total	105,659
Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	2,308	9,170	34,066
Incurred from inception to December 31, 2015	45,544
Total	45,544
Corporate Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period		4,940	1,661
Incurred from inception to December 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 period	37,711	4,003
Incurred from inception to December 31, 2015	41,714
Estimate of remaining amounts to be incurred	6,000
Total	47,714
AOR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	800
Incurred from inception to December 31, 2015	800
Estimate of remaining amounts to be incurred	5,000
Total	5,800
Impairments and write offs [Member] | Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period		(1,240)	14,163
Incurred from inception to December 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 period	601	3,735	9,645
Incurred from inception to December 31, 2015	13,981
Total	13,981
Severance and other personnel-related costs [Member] | Corporate Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period		938	1,661
Incurred from inception to December 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 period	1,707	6,675	4,175
Incurred from inception to December 31, 2015	12,557
Total	12,557
Other [Member] | Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period			158
Incurred from inception to December 31, 2015	158
Total	158
Other [Member] | Corporate Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period		798
Incurred from inception to December 31, 2015	798
Total	798
Legal and other advisor fees [Member] | Corporate Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period		3,204
Incurred from inception to December 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 December 31, 2015	4,000
Morgan City Environmental Accrual [Member] | Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period			5,925
Incurred from inception to December 31, 2015	5,925
Total	5,925
AEA [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	9,646	9,170	34,066
Incurred from inception to December 31, 2015	52,882
Estimate of remaining amounts to be incurred	1,600
Total	54,482
AEA [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 period	6,646
Incurred from inception to December 31, 2015	6,646
Total	6,646
AEA [Member] | Severance and other personnel-related costs [Member] | AOR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Estimate of remaining amounts to be incurred	1,600
Total	1,600
AEA [Member] | Other [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	692
Incurred from inception to December 31, 2015	692
Total	692
MEA [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	856
Incurred from inception to December 31, 2015	856
Total	856
MEA [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 period	856
Incurred from inception to December 31, 2015	856
Total	856
ASA [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	19,509
Incurred from inception to December 31, 2015	19,509
Estimate of remaining amounts to be incurred	7,190
Total	26,699
ASA [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 period	6,104
Incurred from inception to December 31, 2015	6,104
Estimate of remaining amounts to be incurred	2,100
Total	8,204
ASA [Member] | Severance and other personnel-related costs [Member] | AOR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Estimate of remaining amounts to be incurred	2,000
Total	2,000
ASA [Member] | Other [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	5,934
Incurred from inception to December 31, 2015	5,934
Estimate of remaining amounts to be incurred	3,090
Total	9,024
ASA [Member] | Asset impairment [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	7,471
Incurred from inception to December 31, 2015	7,471
Total	7,471
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 period	1,611
Incurred from inception to December 31, 2015	1,611
Total	1,611
Corporate and Other [Member] | Other [Member] | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	983
Incurred from inception to December 31, 2015	983
Total	983
Corporate [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	10,808	8,943	$ 1,661
Incurred from inception to December 31, 2015	21,412
Estimate of remaining amounts to be incurred	2,210
Total	23,622
Corporate [Member] | Severance and other personnel-related costs [Member] | AOR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Estimate of remaining amounts to be incurred	600
Total	600
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 period	7,414	$ 4,003
Incurred from inception to December 31, 2015	11,417
Estimate of remaining amounts to be incurred	810
Total	12,227
Corporate [Member] | Legal and other advisor fees [Member] | AOR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	800
Incurred from inception to December 31, 2015	800
Estimate of remaining amounts to be incurred	800
Total	$ 1,600