Concentration of Credit Risk (Tables)

3 Months Ended

Apr. 25, 2020

Risks and Uncertainties [Abstract]

Schedule that Represents A Significant Portion of the Company’s Customer Base and Each Over 10% of Total Revenue

Customers whose combined amounts of accounts receivable and contract assets, net, exceeded 10% of total combined accounts receivable and contract assets, net, as of April 25, 2020 or January 25, 2020 were as follows (dollars in millions):

	April 25, 2020			January 25, 2020
	Amount		% of Total	Amount		% of Total
Verizon Communications Inc.	$	471.2	41.9%	$	440.2	41.8%
CenturyLink, Inc.	$	204.6	18.2%	$	175.8	16.7%
Comcast Corporation	$	130.0	11.6%	$	114.0	10.8%

Customers whose contract revenues exceeded 10% of total contract revenues during the three months ended April 25, 2020 or April 27, 2019, as well as total contract revenues from all other customers combined, were as follows (dollars in millions):

	For the Three Months Ended
	April 25, 2020			April 27, 2019
	Amount		% of Total	Amount		% of Total
Verizon Communications Inc.	$	176.1	21.6%	$	179.8	21.6%
AT&T Inc.	154.0		18.9	209.3		25.1
CenturyLink, Inc.	148.8		18.3	109.8		13.2
Comcast Corporation	118.0		14.5	137.1		16.4
Total other customers combined	217.4		26.7	197.7		23.7
Total contract revenues	$	814.3	100.0%	$	833.7	100.0%

Total contract revenues by customer type during the three months ended April 25, 2020 and April 27, 2019 were as follows (dollars in millions):

	For the Three Months Ended
	April 25, 2020			April 27, 2019
	Amount		% of Total	Amount		% of Total
Telecommunications	$	726.0	89.2%	$	761.4	91.3%
Underground facility locating	53.3		6.5	48.2		5.8
Electrical and gas utilities and other	35.0		4.3	24.1		2.9
Total contract revenues	$	814.3	100.0%	$	833.7	100.0%