Summary Of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2011 months	Dec. 31, 2010	Dec. 31, 2009
Summary Of Significant Accounting Policies [Line Items]
Duration of operating cycle - minimum, in years	1
Duration of operating cycle - maximum, in years	3
Increase in operating earnings due to net favorable cumulative catch-up adjustments	$ 229,000,000	$ 125,000,000	$ 29,000,000
Increase in EPS as a result of catch-up adjustments	230,000.00	120,000.00	0.03
Reinsurance revenues	144,000,000	139,000,000	122,000,000
Reinsurance costs related to premiums and claims paid to the reinsurance pool	142,000,000	123,000,000	118,000,000
Negative cash balances reclassified to accounts payable	$ 132,000,000	$ 209,000,000
Ownership interest in voting rights of investee required for significant influence minimum	20.00%
Ownership interest in voting rights of investee required for significant influence maximum	50.00%
Range of years between the initial sale of aircraft and repurchase	10 to 15 years
Standard warranty on sales - minimum period	6
Standard warranty on sales - maximum period	12
New Buildings And Land Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives - minimum, in years	10
Estimated useful lives - maximum, in years	40
New Machinery And Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives - minimum, in years	3
Estimated useful lives - maximum, in years	20
Other Assets [Member]
Summary Of Significant Accounting Policies [Line Items]
Capitalized internal use software depreciable life	5
Aircraft [Member]
Summary Of Significant Accounting Policies [Line Items]
Standard warranty on sales - minimum period	3
Standard warranty on sales - maximum period	4
Developed Technology [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - minimum, in years	4
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - maximum, in years	14
Distribution Rights [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - minimum, in years	3
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - maximum, in years	30
Product Know-How [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - minimum, in years	3
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - maximum, in years	30
Customer Base [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - minimum, in years	3
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - maximum, in years	19
Other Intangible Assets [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - minimum, in years	1
Finite-lived acquired intangible assets - amortized on a straight-line basis over their estimated useful lives - maximum, in years	32