Debt (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Debt and Average Interest Rates on Debt Outstanding

Debt and the average interest rates on debt outstanding were as follows:

In millions	Average interest rate as of September 30, 2018	Maturity Year	September 30, 2018			December 31, 2017
Commercial paper	2.934%	2023	$	99.0		$	34.0
Revolving credit facilities	3.461%	2023	9.4			28.4
Senior notes - fixed rate (1)	2.900%	2018	—			255.3
Senior notes - fixed rate (1)	2.650%	2019	250.0			250.0
Senior notes - fixed rate - Euro (1)	2.450%	2019	160.4			594.4
Senior notes - fixed rate (1)	3.625%	2020	74.0			74.0
Senior notes - fixed rate (1)	5.000%	2021	103.8			103.8
Senior notes - fixed rate (1)	3.150%	2022	88.3			88.3
Senior notes - fixed rate (1)	4.650%	2025	19.3			19.3
Other	N/A	N/A	0.1			—
Unamortized debt issuance costs and discounts	N/A	N/A	(5.5		)	(6.8		)
Total debt			$	798.8		$	1,440.7
(1) Senior notes are guaranteed as to payment by Pentair and PISG

Debt Outstanding Matures on Calendar Year Basis

Debt outstanding, excluding unamortized issuance costs and discounts, at September 30, 2018 matures on a calendar year basis as follows:

	Q4
In millions	2018		2019		2020		2021		2022		2023		Thereafter		Total
Contractual debt obligation maturities	$	—	$	410.5	$	74.0	$	103.8	$	88.3	$	108.4	$	19.3	$	804.3