CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Net income	$ 217,423		$ 151,355		$ 227,712
Other comprehensive income (loss), net of tax:
Amortization of benefit plan costs	11,633		18,538		44,322
Unrealized gain (loss) on benefit plan revaluation	(23,821)		44,828		(21,612)
Unrealized gain (loss) on investments	2,087		(93)		2,440
Realized loss on investments			20		91
Translation adjustments	9,072		(5,550)		(23,252)
Unrealized gain on derivatives	1,576		4,505		606
Realized loss on derivatives	7,135		171		2,229
Other comprehensive income, net of tax	7,682	[1]	62,419	[1]	4,824	[1]
Total Comprehensive Income	225,105		213,774		232,536
Less: Comprehensive Income Attributable to Noncontrolling Interests	10,835		13,357		26,046
Comprehensive Income Attributable to McDermott International, Inc.	$ 214,270		$ 200,417		$ 206,490

[1] The tax impact on amounts presented in other comprehensive income are not significant.