Trade and Notes Receivable, net (Tables)

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Trade and Notes Receivable, Net

Trade and notes receivable, net, consists of the following (in millions):

	As of December 31,
	2014			2013
Trade accounts receivable	$	448.1		$	190.6
Notes receivable, current portion		13.2			4.9
		461.3			195.5
Allowance for doubtful accounts		(20.1	)		(15.8	)
Total, net	$	441.2		$	179.7

Change in Allowances for Doubtful Accounts

The change in allowances for doubtful accounts is as follows (in millions):

	As of December 31,
	2014		2013
Beginning balance	$	15.8	$	19.7
Bad debt expense, net		1.9		2.0
Write-offs and other, net		2.4		(5.9	)
Ending balance	$	20.1	$	15.8