Indebtedness (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended					0 Months Ended	12 Months Ended							12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Domestic revolving credit facility	Dec. 31, 2012 Foreign revolving loan facility	Dec. 03, 2012 Term loan	Dec. 31, 2012 Term loan 1	Dec. 31, 2012 Term loan 2	Dec. 31, 2012 6.875% senior notes	Dec. 31, 2011 6.875% senior notes	Dec. 31, 2012 7.625% senior notes	Dec. 31, 2011 7.625% senior notes	Dec. 31, 2007 7.625% senior notes	Dec. 31, 2012 Trade receivables financing arrangement	Dec. 31, 2012 Other indebtedness	Dec. 31, 2011 Other indebtedness	Dec. 31, 2012 Participation foreign credit instrument facility	Dec. 31, 2012 Bilateral foreign credit instrument facility	Dec. 31, 2012 Global revolving credit facility
Debt
Balance at the beginning of the period	$ 2,001.1				$ 30.9		$ 300.0	$ 500.0	$ 600.0	$ 600.0	$ 500.0	$ 500.0			$ 70.2
Borrowings	1,210.0			1,065.0										127.3	17.7
Repayments	(1,575.5)			(1,065.0)	(31.9)	(325.0)	(300.0)	(25.0)						(127.3)	(26.3)
Other	56.4				1.0										55.4
Balance at the end of the period	1,692.0	2,001.1						475.0	600.0	600.0	500.0	500.0			117.0
Interest expense	(114.4)	(97.0)	(86.9)			(8.0)
Short-term debt	33.4	71.3
Current maturities of long-term debt	8.7	4.2
Total long-term debt	1,649.9	1,925.6
Interest rate percentage									6.875%		7.625%		7.625%
Purchase card program															27.9	40.4
Capital lease obligations	82.3														82.3	26.0
Maximum borrowing capacity under financing arrangement				300.0										130.0			1,000.0	200.0	300.0
Debt assumed in capital lease obligations															60.0
Debt repayable in quarterly installments								475.0
Maturities of long-term debt payable
2013	8.7
2014	581.4
2015	106.0
2016	304.6
2017	$ 604.5