Restructuring - Restructuring Costs Incurred and Future Cost Expected to be Incurred (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	$ 11,263		$ 40,819	$ 18,113
Incurred from inception to December 31, 2016	105,922
Americas Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	(1,350)	[1]	2,308	9,170
Incurred from inception to December 31, 2016	44,194
Corporate Restructuring [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period				4,940
Incurred from inception to December 31, 2016	6,601
MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	5,248		37,711	4,003
Incurred from inception to December 31, 2016	46,962
AOR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	7,365		800
Incurred from inception to December 31, 2016	8,165
AEA [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	2,663		9,646	9,170
Incurred from inception to December 31, 2016	55,545
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, 2016	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]
Incurred for the period	3,833
Incurred from inception to December 31, 2016	3,833
AEA [Member] | Other Charges | 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, 2016	692
AEA [Member] | Other Charges | AOR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	180
Incurred from inception to December 31, 2016	180
MEA [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	17		856
Incurred from inception to December 31, 2016	873
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, 2016	856
MEA [Member] | Other Charges | AOR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	17
Incurred from inception to December 31, 2016	17
ASA [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	5,369		19,509
Incurred from inception to December 31, 2016	24,878
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	2,590		6,104
Incurred from inception to December 31, 2016	8,694
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]
Incurred for the period	343
Incurred from inception to December 31, 2016	343
ASA [Member] | Asset impairment and disposal [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, 2016	7,471
ASA [Member] | Other Charges | MPI [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	2,436		5,934
Incurred from inception to December 31, 2016	8,370
Corporate and Other [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	3,214		10,808	8,943
Incurred from inception to December 31, 2016	24,626
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, 2016	1,611
Corporate and Other [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]
Incurred for the period	836
Incurred from inception to December 31, 2016	836
Corporate and Other [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	222		7,414	$ 4,003
Incurred from inception to December 31, 2016	11,639
Corporate and Other [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	1,968		800
Incurred from inception to December 31, 2016	2,768
Corporate and Other [Member] | Other Charges | 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, 2016	983
Corporate and Other [Member] | Other Charges | AOR [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the period	188
Incurred from inception to December 31, 2016	$ 188

[1] This amount includes reversal of environmental liability established in connection with discontinued utilization of our Morgan City fabrication facility. For further discussion see, Note 18, Commitments and Contingencies.