Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Changes And Error Corrections [Abstract]

Summary of Impact of Adoption of New Accounting Standards

Balance Sheet (Dollars in millions)	Balance at December 31, 2017		Adjustments due to ASU 2014-09			Balance at January 1, 2018
Assets
Inventories, net1)	$	859.1	$	(17.3	)	$	841.8
Other current assets1)		228.9		22.0			250.9
Equity
Retained Earnings1)		4,079.2		3.3			4,082.5

1) Impact at adoption which included both continuing and discontinued operations.

	Year ended December 31, 2018
Income Statement (Dollars in millions)	As Reported			Balances without adoption of ASU 2014-09			Effect of Changes
Net sales	$	8,678.2		$	8,673.7		$	4.5
Cost of sales		(6,966.9	)		(6,963.1	)		(3.8	)
Operating income		686.0			685.3			0.7

	As of December 31, 2018
Balance Sheet (Dollars in millions)	As Reported		Balances without adoption of ASU 2014-09		Effect of Changes
Assets
Inventories, net	$	757.9	$	773.6	$	(15.7	)
Other current assets		244.6		225.1		19.5
Equity
Retained Earnings		2,041.8		2,039.1		2.7