CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Revenues	$ 3,641,624	[1]	$ 3,445,110	[1]	$ 2,403,743	[1]
Costs and Expenses:
Cost of operations	3,100,009		2,980,390		1,842,261
Selling, general and administrative expenses	205,974		212,002		216,763
Loss on asset impairments			5,488		24,660
Gain on asset disposals	(405)		(8,478)		(2,440)
Total Costs and Expenses	3,305,578		3,189,402		2,081,244
Equity in Loss of Unconsolidated Affiliates	(16,719)		(4,985)		(7,594)
Operating Income	319,327		250,723		314,905
Other Income (Expense):
Interest income	4,656		1,848		1,495
Interest expense			(529)		(2,584)
Gain (loss) on foreign currency-net	20,142		1,234		(6,901)
Other income (expense)-net	(995)		(1,985)		(3,121)
Total Other Income (Expense)	23,803		568		(11,111)
Income from continuing operations before provision for income taxes, discontinued operations and noncontrolling interest	343,130		251,291		303,794
Provision for Income Taxes	129,204		87,124		41,182
Income from continuing operations before discontinued operations and noncontrolling interest	213,926		164,167		262,612
Gain (loss) on disposal of discontinued operations	257		(21,934)		(123,311)
Income from discontinued operations, net of tax	3,240		9,122		88,411
Income (loss) from discontinued operations, net of tax	3,497		(12,812)		(34,900)
Net Income	217,423		151,355		227,712
Less: net income attributable to noncontrolling interests	10,770		12,625		26,046
Net income attributable to McDermott International, Inc.	$ 206,653		$ 138,730		$ 201,666
Basic:
Income from continuing operations, less noncontrolling interest	$ 0.86		$ 0.65		$ 1.02
Income (loss) from discontinued operations, net of tax	$ 0.01		$ (0.05)		$ (0.15)
Net Income	$ 0.88		$ 0.59		$ 0.87
Diluted:
Income from continuing operations, less noncontrolling interest	$ 0.86		$ 0.64		$ 1.00
Income (loss) from discontinued operations, net of tax	$ 0.01		$ (0.05)		$ (0.15)
Net Income	$ 0.87		$ 0.59		$ 0.85
Shares Used in the Computation of Earnings per Share:
Basic	235,638,422		234,598,901		232,173,362
Diluted	237,619,688		237,040,507		235,622,029

[1] Intercompany transactions were not significant for the years ended December 31, 2012 and 2011. For the year ended December 31, 2010, intercompany transactions of $20,129 in our Atlantic segment were eliminated at the consolidated level.