Schedule II - Valuation And Qualifying Accounts Schedule II - Valuation And Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2017

Valuation and Qualifying Accounts [Abstract]

Summary of Valuation Allowance [Table Text Block]

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

($ in millions)

Classification	Balance at Beginning of Period (a)		Charged to Costs & Expenses		Impact of Currency			Charged to Other Accounts			Write-Offs, Write-Downs & Deductions			Balance at End of Period (a)
Year ended December 31, 2017:
Allowances deducted from asset account
Allowance for doubtful accounts	$	103.5	$	32.9	$	4.5		$	3.5	(b)	$	(26.2	)	$	118.2
Year ended December 31, 2016:
Allowances deducted from asset account
Allowance for doubtful accounts	$	89.7	$	32.5	$	(0.6	)	$	2.3	(b)	$	(20.4	)	$	103.5
Year ended December 31, 2015:
Allowances deducted from asset account
Allowance for doubtful accounts	$	77.0	$	25.2	$	(6.3	)	$	21.1	(b)	$	(27.3	)	$	89.7

^(a)   Amounts include allowance for doubtful accounts classified as current and noncurrent.

^(b)  Amounts related to businesses acquired, net of amounts related to businesses disposed not included in discontinued operations.