Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Business Acquisition [Line Items]
Purchase price		$ 600,000,000
Gain on formation of OneSubsea	1,028,000,000	1,028,000,000
Acquisitions and investments, net of cash acquired		117,000,000
OneSubsea [Member]
Business Acquisition [Line Items]
Ownership interest in joint venture		40.00%
Gain on formation of OneSubsea		1,028,000,000
Gain on re-measurement to fair value		400,000,000
OneSubsea [Member] | Cameron International Corporation [Member]
Business Acquisition [Line Items]
Purchase price		$ 600,000,000