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Fixed interest rate related to the interest rate derivative.

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Nominal or face amount used to calculate payments on the derivative liability.

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Date the derivative contract matures, in CCYY-MM-DD format.

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Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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Debt - Narrative (Details) - Line of Credit Facility - USD ($) $ in Millions			3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 03, 2019	Oct. 02, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Nov. 04, 2019	Jul. 19, 2019	Jul. 18, 2019
Line of Credit Facility [Line Items]
Derivative, Variable Interest Rate			2.00%		2.00%
Interest rate cash flow hedge liability at fair value			$ 5.6		$ 5.6
Derivative liability							$ 2.4
Fair Value, Inputs, Level 2
Line of Credit Facility [Line Items]
Interest rate cash flow hedge liability at fair value			5.6		5.6		$ 2.4
Interest Rate Swap
Line of Credit Facility [Line Items]
Derivative liability, notional amount			$ 200.0		$ 200.0
Derivative, fixed interest rate			2.70%		2.70%
Debt instrument, description of variable rate basis					one-month LIBOR
Maximum \| Interest Rate Swap
Line of Credit Facility [Line Items]
Derivative, maturity date					Jun. 30, 2022
Revolving credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 430.0		$ 430.0
Credit facility, expiration date					Mar. 16, 2022		Mar. 16, 2022
Commitment fee for unused commitments			0.4	$ 0.4	$ 1.1	$ 1.0
Revolving credit facility \| Long-term debt
Line of Credit Facility [Line Items]
Credit facility, outstanding amount			$ 15.0		$ 15.0		$ 0.0
Line of Credit Facility, Interest Rate at Period End			4.00%		4.00%
Letter of credit sublimit to revolving credit facility
Line of Credit Facility [Line Items]
Letters of credit outstanding, amount			$ 2.0		$ 2.0
Letter of credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity			150.0		150.0
Letters of credit outstanding, amount			71.0		71.0
Letter of credit \| Subsequent Event
Line of Credit Facility [Line Items]
Maximum borrowing capacity								$ 78.0
Line of Credit Facility, Increase (Decrease), Net	$ 30.0	$ 42.0
AR Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity			125.0		$ 125.0				$ 125.0	$ 100.0
Credit facility, expiration date					Jun. 30, 2022
AR Facility \| Short-term debt
Line of Credit Facility [Line Items]
Credit facility, outstanding amount			$ 120.0		$ 120.0		85.0
Short-term Debt, Weighted Average Interest Rate, at Point in Time			3.10%		3.10%
Line of credit facility, remaining borrowing capacity			$ 5.0		$ 5.0
AR Facility \| Short-term debt \| Subsequent Event
Line of Credit Facility [Line Items]
Credit facility, outstanding amount								$ 105.0
Short-term Debt, Weighted Average Interest Rate, at Point in Time								3.00%
Repurchase facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity			90.0		$ 90.0				$ 90.0	$ 75.0
Credit facility, expiration date					Jun. 30, 2020
Repurchase facility \| Short-term debt
Line of Credit Facility [Line Items]
Credit facility, outstanding amount			$ 90.0		$ 90.0		$ 75.0
Short-term Debt, Weighted Average Interest Rate, at Point in Time			3.20%		3.20%
Line of credit facility, remaining borrowing capacity			$ 0.0		$ 0.0
Repurchase facility \| Short-term debt \| Subsequent Event
Line of Credit Facility [Line Items]
Credit facility, outstanding amount								$ 90.0
Short-term Debt, Weighted Average Interest Rate, at Point in Time								3.10%
AR securitization facilities \| Maximum
Line of Credit Facility [Line Items]
Debt instrument, collateral amount			$ 329.0		$ 329.0