Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2021

Summary of Significant Accounting Policies [Abstract]

Allowance for Credit Losses

The following table presents our allowance for credit losses activity since December 31, 2020:

Allowance for credit losses, December 31, 2020	$	46.5
Charged to costs and expenses		0.2
Charged to other accounts		1.1
Deductions		(0.5	)
Allowance for credit losses, March 31, 2021	$	47.3

Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash and cash equivalents, and restricted cash reported within the Unaudited Condensed Consolidated Balance Sheets that sum to the total of the amounts shown in the Unaudited Condensed Statements of Consolidated Cash Flows.

	March 31, 2021		December 31, 2020
Cash and cash equivalents	$	229.4	$	1,059.9
Restricted cash		105.0		98.2
Total cash, cash equivalents and restricted cash shown in the   Unaudited Condensed Statements of Consolidated Cash Flows	$	334.4	$	1,158.1