Pension and Post-Retirement Benefits - Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Expected increase in medical costs during period	7.69%
Expected decrease in medical costs in 2030 and thereafter	4.50%
Cost of 401(k) retirement savings plan	$ 22	$ 11	$ 9
Equity Securities | United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	70.00%
US and International equities | United States
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	75.00%
UK listed companies equities | United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	42.00%
Non-UK listed companies equities | United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	28.00%
Non-UK listed companies equities | Switzerland
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	27.50%
Bonds | United States
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	25.00%
Bonds | United Kingdom
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	30.00%
Bonds | Switzerland
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	54.50%
Real Estate | Switzerland
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	15.00%
Other | Switzerland
Defined Benefit Plan Disclosure [Line Items]
Target plan assets investment allocation	3.00%