Borrowings and Credit Arrangements (Details)	3 Months Ended	9 Months Ended	12 Months Ended					18 Months Ended												3 Months Ended
	Sep. 30, 2013 USD ($)	Sep. 30, 2013 USD ($)	Dec. 31, 2012 USD ($)	Sep. 30, 2013 Covenant Requirement [Member]	Sep. 30, 2013 Actual, Covenant [Member]	Sep. 30, 2013 Credit Facility Two [Member] USD ($)	Mar. 31, 2013 Credit Facility Two [Member] USD ($)	Sep. 30, 2013 Revolving credit facility [Member] USD ($)	Apr. 18, 2012 Revolving credit facility [Member] USD ($)	Sep. 30, 2013 Unsecured Term Loan Facility [Member] USD ($)	Aug. 06, 2013 Unsecured Term Loan Facility [Member] USD ($)	Sep. 30, 2013 Uncommitted Credit Facilities With A Commercial Japanese Banks [Member] USD ($)	Sep. 30, 2013 Uncommitted Credit Facilities With A Commercial Japanese Banks [Member] JPY (¥)	Dec. 31, 2012 Uncommitted Credit Facilities With A Commercial Japanese Banks [Member] USD ($)	Sep. 30, 2013 Senior Notes [Member] USD ($)	Sep. 30, 2013 Unsecured Term Loan Facility [Member] USD ($)	Sep. 30, 2013 Italy, Spain, Portugal and Greece [Member] USD ($)	Aug. 13, 2013 $600 million, Senior Note [Member] USD ($)	Aug. 13, 2013 $450 million, Senior Note [Member] USD ($)	Sep. 30, 2013 $600 million, Snr Note [Member] USD ($)	Sep. 30, 2013 $850 million, Senior Note [Member] USD ($)
Schedule of debt maturities
Long-term Debt, Maturities, Repayments of Principal in Current Year	$ 0	$ 0													$ 0	$ 0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0	0													0	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	400,000,000	400,000,000													400,000,000	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	680,000,000	680,000,000													600,000,000	80,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	330,000,000	330,000,000													250,000,000	80,000,000
Long-term Debt, Maturities, Repayments of Principal After Year Five	2,790,000,000	2,790,000,000													2,550,000,000	240,000,000
Long-term Debt, Maturities, Total Repayments of Principal	4,200,000,000	4,200,000,000													3,800,000,000	400,000,000
Summary of compliance with debt covenants
Maximum Leverage Ratio				3.5	2.4
Minimum interest coverage ratio				3.0	5.4
Borrowings and Credit Arrangements (Textuals) [Abstract]
Total debt	4,249,000,000	4,249,000,000	4,256,000,000
Interest Margin above LIBOR, Minimum									0.875%		1.00%
Interest Margin above LIBOR, Maximum									1.475%		1.75%
Line of Credit Facility, Current Interest Rate								1.275%
Commitment fee percentage								0.225%
Restructuring charges remaining to be excluded from calculation of consolidated EBITDA								287,000,000
Legal payments and debt remaining to be excluded from calculation of consolidated EBITDA								2,278,000,000
Senior notes	3,800,000,000.00	3,800,000,000.00	4,200,000,000															600,000,000	450,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate																		2.70%	4.10%
Line of Credit Facility, Maximum Borrowing Capacity						300,000,000	350,000,000		2,000,000,000
Maximum amount of proceeds from sale of finance receivables	306,000,000	306,000,000										214,000,000	21,000,000,000
Derecognized receivables From Sale Of Finance Receivables	166,000,000	166,000,000
De-recognized receivables			191,000,000									156,000,000		182,000,000
Average interest rate of de-recognized receivables		3.30%	1.60%
Average discounted rates of notes receivables												2.00%	2.00%	1.60%
Litigation and Debt Exclusion from EBITDA									2,300,000,000
Exclusion from EBITDA for Restructuring Charges									500,000,000
Unsecured Term Loan Facility, Interest Rate During Period										1.50%
Repayments of Long-term Debt										20,000,000
Long-term Debt, Gross											400,000,000
Repayments of Long-term Debt																				600,000,000	850,000,000
Payments of Debt Extinguishment Costs	70,000,000
Payment of Debt Extinguishment Costs, net of tax	44,000,000
Letters of Credit Outstanding, Amount	74,000,000	74,000,000	94,000,000
Accounts receivable 180 days past due																	78,000,000
Accounts receivable 365 days past due																	$ 28,000,000