Financial Instruments (Finance Receivables Balance, Net Of Allowance, By Region And By Class Of Internal Credit Rating) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	$ 124.7
Class 1 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	97.1
Class 2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	26.3
Class 3 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	1.3
North America [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	69.8
North America [Member] | Class 1 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	61.9
North America [Member] | Class 2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	7.8
North America [Member] | Class 3 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	0.1
EMEA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	42.2
EMEA [Member] | Class 1 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	29.4
EMEA [Member] | Class 2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	12.8
Asia Pacific [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	6.6
Asia Pacific [Member] | Class 1 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	4.6
Asia Pacific [Member] | Class 2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	1.8
Asia Pacific [Member] | Class 3 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	0.2
Latin America [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	6.1
Latin America [Member] | Class 1 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	1.2
Latin America [Member] | Class 2 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	3.9
Latin America [Member] | Class 3 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance Receivables Balance	$ 1.0