Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2019

Compensation And Retirement Disclosure [Abstract]

Components of Estimated Net Pension Plan Income

The components of the estimated net pension plan income for DFIN’s pension plans for the three and nine months ended September 30, 2019 and 2018 were as follows:  

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Pension expense (income)
Interest cost	$	2.8		$	2.6		$	8.3		$	7.7
Expected return on assets		(3.7	)		(4.0	)		(11.1	)		(12.0	)
Amortization, net		0.4			0.6			1.3			1.9
Net pension income	$	(0.5	)	$	(0.8	)	$	(1.5	)	$	(2.4	)