KBR Separation (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Loss Contingencies [Line Items]
KBR indemnities and guarantees	$ 0
Payment made for KBR obligation	219	0	0
Tax Sharing Agreement Settlement And Foreign Unrecognized Tax Benefits	105
Barracuda-Caratinga arbitration
Loss Contingencies [Line Items]
Loss Contingency Accrual		219
Payment made for KBR obligation	$ 219