Allowance for Credit Losses

12 Months Ended

Dec. 31, 2020

The changes in the allowance for credit losses related to accounts receivable were as follows:


	Year Ended December 31, 2020
Balance as of December 31, 2019	$	7.9
Provision for credit losses	30.9
Write-offs charged against the allowance for credit losses	(10.8)
Other	1.6
Balance as of December 31, 2020	$	29.6

During the year ended December 31, 2020, the Company recognized a provision for credit losses of $31 million to reflect the forecasted credit deterioration primarily due to the COVID-19 pandemic, which considered geographic-specific factors, customer makeup and the overall size of the Company's pools, as well as the impacts experienced to date and the impacts from the last significant economic downturn in 2008-2009. Due to the higher inherent risk in the pools associated with the Company's Corporate and Small Business segments, the overall size of certain pools within the Public segment, and the increased risk with customers based from the UK pool, the majority of the allowance relates to these pools. As the overall impact and duration of the COVID-19 pandemic remains uncertain, the Company's estimates and assumptions may evolve as conditions change.