Employee Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended					3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Net Unrealized Losses on Retirement Plans	Dec. 31, 2012 Net Unrealized Losses on Retirement Plans	Mar. 31, 2012 U.S. Pension Plan	Dec. 31, 2012 U.S. Pension Plan	Dec. 31, 2013 U.S. Pension Plan	Dec. 31, 2013 Primary U.S. And Non-U.S. Defined Benefit Plans	Dec. 31, 2012 Primary U.S. And Non-U.S. Defined Benefit Plans	Dec. 31, 2013 SERPs	Dec. 31, 2013 DC SERP [Member]	Dec. 31, 2012 DC SERP [Member]	Dec. 31, 2011 DC SERP [Member]	Dec. 31, 2013 Post-Retirement Plan	Dec. 31, 2012 Post-Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on plan assets								6.75%	6.75%	6.75%					0.00%	0.00%
Accumulated benefit obligation	$ 259	$ 1,050					$ 947	$ 841
Expected employer contributions to U.S. and Non-U.S. defined benefit pension plans, SERPs and post-retirement plan									7		27				7
Plan assets	62	814		45	810
Projected benefit obligations	300	1,080
Health care cost trend rates increase	1.00%
Post-retirement benefit obligation increase	7.00%
Aggregate expense for service and interest costs increase	11.00%
Health care cost trend rates decrease	1.00%
Post-retirement benefit obligation decrease	6.00%
Aggregate expense for service and interest costs decrease	9.00%
Expenses related to pre-tax salary- U.S employees	61	70	77
Defined Contribution Plan, Employer Matching Contribution, Percent						6.00%	5.00%
Expenses related to pre-tax salary- Non-U.S employees	66	65	65
Recorded compensation and employee benefits expense	$ 140	$ 139	$ 103									$ 7	$ 11	$ 10