Pension and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2019

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Net Benefit Costs

The net periodic benefit cost for the three and nine months ended September 30, 2019 and 2018 includes the following components: 

	Pension Benefits						Postretirement Benefits
	Three Months Ended   September 30,						Three Months Ended   September 30,
Components of Net Periodic Benefit Cost	2019			2018			2019		2018
Selling, general, and administrative expenses:
Service cost	$	6.4		$	7.1		$	0.5	$	0.5
Total selling, general, and administrative expenses	$	6.4		$	7.1		$	0.5	$	0.5
Non-operating expenses:
Interest cost	7.5			6.8			0.7		0.6
Expected return on plan assets	(8.5		)	(7.9		)	—		—
Amortization of:
Net actuarial loss	4.8			6.7			—		0.3
Prior service cost (gain)	—			—			—		(0.5		)
Total non-operating expenses	$	3.8		$	5.6		$	0.7	$	0.4
Net periodic benefit cost	$	10.2		$	12.7		$	1.2	$	0.9
	Pension Benefits						Postretirement Benefits
	Nine Months Ended   September 30,						Nine Months Ended   September 30,
Components of Net Periodic Benefit Cost	2019			2018			2019		2018
Selling, general, and administrative expenses:
Service cost	$	19.2		$	21.4		$	1.5	$	1.7
Total selling, general, and administrative expenses	$	19.2		$	21.4		$	1.5	$	1.7
Non-operating expenses:
Interest cost	22.5			20.5			2.2		2.0
Expected return on plan assets	(25.5		)	(23.9		)	—		—
Amortization of:
Net actuarial loss	14.3			19.9			0.2		0.7
Prior service cost (gain)	—			0.2			—		(1.5		)
Total non-operating expenses	$	11.3		$	16.7		$	2.4	$	1.2
Net periodic benefit cost	$	30.5		$	38.1		$	3.9	$	2.9