Retirement Benefits (Schedule of Estimated Amounts That Will Be Amortized from Accumulated Other Comprehensive in the Next Fiscal Year) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service credit	$ 0
Net actuarial loss	71
Projected cost (credit)	71
Non-U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service credit	1
Net actuarial loss	(100)
Projected cost (credit)	(99)
Non-U.S. Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service credit	0
Net actuarial loss	0
Projected cost (credit)	0
U.S. Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Prior service credit	(4)
Net actuarial loss	2
Projected cost (credit)	$ (2)