Commitments and Contingent Liabilities (Guarantees) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Customer and Supplier Guarantee [Member]	Mar. 31, 2014 Customer and Supplier Guarantee, Bank Borrowings [Member] Y		Mar. 31, 2014 Customer and Supplier Guarantee, Leases on Equipment and Facilities [Member] Y		Mar. 31, 2014 Equity Affiliates, Bank Borrowings [Member] Y		Mar. 31, 2014 Guarantee Obligations, Long Term [Member]	Mar. 31, 2014 Guarantee Obligations, Long Term [Member] Customer and Supplier Guarantee, Bank Borrowings [Member]		Mar. 31, 2014 Guarantee Obligations, Long Term [Member] Customer and Supplier Guarantee, Leases on Equipment and Facilities [Member]		Mar. 31, 2014 Guarantee Obligations, Long Term [Member] Equity Affiliates, Bank Borrowings [Member]		Mar. 31, 2014 Guaranteed Obligations Short Term [Member]	Mar. 31, 2014 Guaranteed Obligations Short Term [Member] Customer and Supplier Guarantee, Bank Borrowings [Member]		Mar. 31, 2014 Guaranteed Obligations Short Term [Member] Customer and Supplier Guarantee, Leases on Equipment and Facilities [Member]		Mar. 31, 2014 Guaranteed Obligations Short Term [Member] Equity Affiliates, Bank Borrowings [Member]
Guarantor Obligations [Line Items]
Guarantee obligations	$ 563	$ 561	$ 374	$ 372	[1]	$ 2	[1]	$ 189	[2]	$ 86	$ 84	[1]	$ 2	[1]	$ 0	[2]	$ 477	$ 288	[1]	$ 0	[1]	$ 189	[2]
Collateral assets and personal guarantees percentage			48.00%
Guaranteed obligations, maximum term				8		5		1

[1] Existing guarantees for customers and suppliers, as part of contractual agreements.

[2] Existing guarantees for equity affiliates' liquidity needs in normal operations.