Contract Assets and Contract Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Contract with Customer, Asset and Liability [Table Text Block]

We report contract assets, which are included within “Other current assets” on our Consolidated Balance Sheets, and contract liabilities, which are included within “Accrued liabilities” on our Consolidated Balance Sheets, on a contract-by-contract net basis at the end of each reporting period. Net contract assets and contract liabilities consisted of the following:

(in millions)	December 31, 2018		January 1,  2018
Contract assets	$	54.9	$	22.1
Contract liabilities	$	50.8	$	21.1