Capitalized contract costs (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Deferred Commissions, Costs to Fulfill a Contract, and Amortization Expense

Deferred commissions were as follows:

As of December 31,	2021		2020
Deferred commissions	$	6.7	$	8.7

Amortization expense related to deferred commissions was as follows:

Year ended December 31,	2021		2020		2019
Deferred commissions—amortization expense(i)	$	2.9	$	3.2	$	3.1

(i)  Reported in selling, general and administrative expense in the company’s consolidated statements of income (loss)

Costs to fulfill a contract were as follows:

As of December 31,	2021		2020
Costs to fulfill a contract	$	56.2	$	74.4

Amortization expense related to costs to fulfill a contract was as follows:

Year ended December 31,	2021		2020		2019
Costs to fulfill a contract—amortization expense	$	27.9	$	27.5	$	24.2