Share-Based Compensation Plans	9 Months Ended
Share-Based Compensation Plans	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation Plans	Share-Based Compensation Plans During the three months ended September 30, 2017 and 2016, we recognized share-based compensation expense of $6.6 and $6.1, respectively, and $21.4 and $21.0 for the nine months ended September 30, 2017 and 2016, respectively. The expense relates to stock options, deferred stock, restricted stock and performance share units. We recognize share-based compensation expense in selling and administrative expenses on a straight-line basis over the service period of each award. Consideration received from share-based awards was $42.9 and $7.2 for the nine months ended September 30, 2017 and 2016, respectively. In January 2017, we adopted the new accounting guidance on share-based payments. This guidance requires all excess tax benefits and tax deficiencies from share-based compensation to be recognized as income tax expense or benefit in the income statement rather than capital in excess of par value on a prospective basis. The guidance also requires the excess tax benefit or deficiency to be classified as an operating activity rather than a financing activity in our Consolidated Statements of Cash Flows. To eliminate diversity in practice, the guidance also requires that cash payments to tax authorities in connection with shares withheld to meet employees' statutory tax withholding requirements are to be included retrospectively, for all periods presented, as financing activities in our Consolidated Statements of Cash Flows, consistent with our methodology. We recorded tax benefits related to share-based compensation of $1.1 and $5.5, or $0.02 and $0.08 per share, for the third quarter and first nine months, respectively, of 2017.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.