CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) [Abstract]
REVENUES	$ 2,495.8	$ 2,218.3	$ 6,900.9	$ 6,076.3
COSTS AND EXPENSES:
Cost of sales (exclusive of depreciation and amortization shown separately below)	1,780.7	1,568.2	4,899.8	4,297.5
Selling and administrative expenses	346.6	285.0	986.2	842.6
Depreciation and amortization	83.4	66.8	223.5	189.9
Interest, net	23.2	25.1	74.4	69.8
Other costs (see Note 3)	13.9	3.4	80.2	11.8
Total costs and expenses	2,247.8	1,948.5	6,264.1	5,411.6
Income before income taxes	248.0	269.8	636.8	664.7
Income tax provision	(55.6)	(46.2)	(155.6)	(132.5)
Net income	192.4	223.6	481.2	532.2
Net income attributable to noncontrolling interests	2.8	0	2.8	0
Net income attributable to Cameron	189.6	223.6	478.4	532.2
Earnings per share attributable to Cameron stockholders:
Basic (in dollars per share)	$ 0.78	$ 0.91	$ 1.95	$ 2.16
Diluted (in dollars per share)	$ 0.78	$ 0.90	$ 1.94	$ 2.15
Shares used in computing earnings per share attributable to Cameron stockholders:
Basic (in shares)	242.7	246.4	245.6	246.3
Diluted (in shares)	244.2	248.1	247.1	248.0
Comprehensive income	281.9	276.1	444.9	585.7
Comprehensive income attributable to noncontrolling interests	28.7	0	28.7	0
Comprehensive income attributable to Cameron	$ 253.2	$ 276.1	$ 416.2	$ 585.7