Acquisitions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Purchase price	$ 600	$ 600
Gain on formation of OneSubsea		1,028
Acquisitions and investments, net of cash acquired		610	845	610
One Subsea
Business Acquisition [Line Items]
Ownership interest in joint venture	40.00%
Gain on formation of OneSubsea	1,028
One Subsea | Parent Company
Business Acquisition [Line Items]
Purchase price	$ 600