Consolidated Balance Sheets (Parenthetical) In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2013 CHF
Accounts and notes receivable, allowances	$ 96.5	$ 112.4
Common stock, par value (per share)	$ 0.01		0.50
Common stock, shares authorized	426.0us-gaap_CommonStockSharesAuthorized	213.0us-gaap_CommonStockSharesAuthorized	213.0us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	202.4us-gaap_CommonStockSharesIssued	213.0us-gaap_CommonStockSharesIssued	213.0us-gaap_CommonStockSharesIssued
Treasury stock, shares	19.9us-gaap_TreasuryStockShares	15.6us-gaap_TreasuryStockShares	15.6us-gaap_TreasuryStockShares

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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