Summary of Significant Accounting Policies Discussion (Tables)

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Estimated Useful Life of Property, Plant, Equipment and Mine Development [Line Items]

Error Impact on Consolidated Balance Sheet Table [Table Text Block]

	Before Application of Accounting Guidance		Adjustment			After Application of Accounting Guidance
	(Dollars in millions)
Other current assets	$	503.1	$	(55.5	)	$	447.6
Investments and other assets	382.6		(18.9		)	363.7
Total assets	11,021.3		(74.4		)	10,946.9
Current portion of long-term debt	5,930.4		(55.5		)	5,874.9
Long-term debt, less current portion	385.2		(18.9		)	366.3
Total liabilities	10,269.6		(74.4		)	10,195.2

Estimated useful life of plant and equipment

The estimated useful lives by category of assets are as follows:

	Years
Building and improvements	3 to 34
Machinery and equipment	3 to 34
Leasehold improvements	Shorter of Useful Life or Remaining Life of Lease