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		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	$ 4,724	$ 4,040	$ 12,112	$ 19,502
Incurred from restructuring inception to September 30, 2014	47,839		47,839
Estimate of remaining amounts to be incurred	16,161		16,161
Total			64,000
Americas [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	2,824		7,387
Incurred from restructuring inception to September 30, 2014	41,453		41,453
Estimate of remaining amounts to be incurred	11,547		11,547
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	100		(1,240)
Incurred from restructuring inception to September 30, 2014	12,923		12,923
Estimate of remaining amounts to be incurred	77		77
Total			13,000
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	(155)		3,099
Incurred from restructuring inception to September 30, 2014	12,744		12,744
Estimate of remaining amounts to be incurred	456		456
Total			13,200
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	2,879		5,528
Incurred from restructuring inception to September 30, 2014	9,703		9,703
Estimate of remaining amounts to be incurred	6,297		6,297
Total			16,000
Americas [Member] | Other [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred from restructuring inception to September 30, 2014	158		158
Estimate of remaining amounts to be incurred	4,717		4,717
Total			4,875
Americas [Member] | Morgan City environmental reserve [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred from restructuring inception to September 30, 2014	5,925		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	1,900		4,725
Incurred from restructuring inception to September 30, 2014	6,386		6,386
Estimate of remaining amounts to be incurred	4,614		4,614
Total			11,000
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	53		961
Incurred from restructuring inception to September 30, 2014	2,622		2,622
Estimate of remaining amounts to be incurred	378		378
Total			3,000
Corporate [Member] | Other [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Incurred for the quarter	730		730
Incurred from restructuring inception to September 30, 2014	730		730
Total			730
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	1,117		3,034
Incurred from restructuring inception to September 30, 2014	3,034		3,034
Estimate of remaining amounts to be incurred	4,236		4,236
Total			$ 7,270