Retirement Plans (Net Periodic Pension Expense For Qualified And Nonqualified U.S. Defined Benefit Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 121.0	$ 116.0	$ 120.0
Interest cost	544.0	541.0	537.0
Expected return on plan assets	(713.0)	(631.0)	(634.0)
Actuarial loss / (gain)	212.0	174.0	160.0
Amortization of prior service cost	31.0	31.0	30.0
Curtailment gain	0	0	0
Settlement gain	0	0	0
Net periodic pension expense	195.0	231.0	213.0
Special termination benefits			83.2
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2.0	3.0	4.0
Interest cost	12.0	12.0	12.0
Expected return on plan assets	(12.0)	(11.0)	(10.0)
Actuarial loss / (gain)	0	0	(2.0)
Amortization of prior service cost	0	0	0
Curtailment gain	0	(2.0)	(1.0)
Settlement gain	(1.0)	(2.0)	0
Net periodic pension expense	$ 1.0	$ 0	$ 3.0