Financing Arrangements (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2011
Long-term Debt
Long-term Debt	$ 2,371.8	$ 2,339.6	$ 2,371.8
Capital lease obligations	12.8	13.2	12.8
Total	2,384.6	2,352.8	2,384.6
Financing Arrangements (Textuals) [Abstract]
Revolving Credit Facility Term	Five
Borrowings under credit facility		0	32
Borrowing capacity under global syndicated revolving credit facility	622.5		622.5
Uncommitted domestic working capital facilities	75		75
Uncommitted and committed foreign working capital facilities	178.1		178.1
Future minimum lease payments under operating leases	213.9		213.9
Medium-term Notes [Member]
Long-term Debt
Long-term Debt	398.9	398.9	398.9
Schedule of Long-term Debt Instruments
Debt Instrument Interest Rate Stated Percentage Rate Range Minimum			6.80%
Debt Instrument Interest Rate Stated Percentage Rate Range Maximum			8.70%
6.29% senior notes, maturing in 2016 [Member]
Long-term Debt
Long-term Debt	294.6	295.0	294.6
Schedule of Long-term Debt Instruments
Maturity Date of Senior Notes			2016
Debt Instrument Interest Rate Stated Percentage	6.29%		6.29%
6.125% senior notes, maturing in 2019 [Member]
Long-term Debt
Long-term Debt	298.2	298.1	298.2
Schedule of Long-term Debt Instruments
Maturity Date of Senior Notes			2019
Debt Instrument Interest Rate Stated Percentage	6.125%		6.125%
4.875% senior notes, maturing in 2020 [Member]
Long-term Debt
Long-term Debt	299.4	299.4	299.4
Schedule of Long-term Debt Instruments
Maturity Date of Senior Notes			2020
Debt Instrument Interest Rate Stated Percentage	4.875%		4.875%
3.6% senior notes, maturing in 2021 [Member]
Long-term Debt
Long-term Debt	598.8	598.8	598.8
Schedule of Long-term Debt Instruments
Maturity Date of Senior Notes			2021
Debt Instrument Interest Rate Stated Percentage	3.60%		3.60%
6.80% senior notes, maturing in 2036 [Member]
Long-term Debt
Long-term Debt	234.1	233.7	234.1
Schedule of Long-term Debt Instruments
Maturity Date of Senior Notes			2036
Debt Instrument Interest Rate Stated Percentage	6.80%		6.80%
7.0% senior notes, maturing in 2038 [Member]
Long-term Debt
Long-term Debt	199.2	199.2	199.2
Schedule of Long-term Debt Instruments
Maturity Date of Senior Notes			2038
Debt Instrument Interest Rate Stated Percentage	7.00%		7.00%
Notes Payable Other Payables [Member]
Long-term Debt
Long-term Debt	48.6	16.5	48.6
Schedule of Long-term Debt Instruments
Maturity Date of Senior Notes			2020
Debt Instrument Interest Rate Stated Percentage Rate Range Minimum			0.20%
Debt Instrument Interest Rate Stated Percentage Rate Range Maximum			2.50%
Uncommitted and Committed Foreign and Domestic Working Capital Facilities [Member]
Line of Credit Facility [Line Items]
Borrowings outstanding under uncommitted and committed foreign and domestic working capital facilities	36.1	4.1	36.1
Letters of credit outstanding	22.9		22.9
Global Syndicated Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Letters of credit outstanding	45.5	62.5	45.5
Working Capital Facilities [Member]
Line of Credit Facility [Line Items]
Letters of credit outstanding	108.3		108.3
New Facility [Member]
Line of Credit Facility [Line Items]
Global syndicated revolving credit facility	700		700
Maturity period of global syndicated revolving credit facility			May 2016
Terminated Facility [Member]
Line of Credit Facility [Line Items]
Global syndicated revolving credit facility	$ 500		$ 500
Maturity period of global syndicated revolving credit facility			May 2012

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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