Debt (Tables)

6 Months Ended

Jun. 30, 2019

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 June 30, 2019	Maturity Year	June 30, 2019			December 31, 2018
Commercial paper	2.943%	2023	$	130.9		$	76.0
Revolving credit facilities	3.498%	2023	4.1			26.2
Senior notes - fixed rate (1)	2.650%	2019	250.0			250.0
Senior notes - fixed rate - Euro (1)	2.450%	2019	155.3			155.1
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
Senior notes - fixed rate (1)	4.500%	2029	400.0			—
Unamortized debt issuance costs and discounts	N/A	N/A	(10.6		)	(5.1		)
Total debt			$	1,215.1		$	787.6
(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 June 30, 2019 matures on a calendar year basis as follows:

	Q3-Q4
In millions	2019		2020		2021		2022		2023		2024		Thereafter		Total
Contractual debt obligation maturities	$	405.3	$	74.0	$	103.8	$	88.3	$	135.0	$	—	$	419.3	$	1,225.7