Customer Concentration and Revenue Information (Tables)

12 Months Ended

Jan. 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 January 25, 2020 or January 26, 2019 were as follows (dollars in millions):

	January 25, 2020			January 26, 2019
	Amount		% of Total	Amount		% of Total
Verizon Communications Inc.	$	440.2	41.8%	$	298.4	36.2%
CenturyLink, Inc.	$	175.8	16.7%	$	147.2	17.9%
Comcast Corporation	$	114.0	10.8%	$	127.2	15.4%
AT&T Inc.	$	97.2	9.2%	$	90.6	11.0%

Total contract revenues by customer type during fiscal 2020, fiscal 2019, the 2018 transition period, and fiscal 2017 were as follows (dollars in millions):

	Fiscal Year Ended						Six Months Ended			Fiscal Year Ended
	January 25, 2020			January 26, 2019			January 27, 2018			July 29, 2017
	Amount		% of Total	Amount		% of Total	Amount		% of Total	Amount		% of Total
Telecommunications	$	3,031.9	90.8%	$	2,855.8	91.3%	$	1,284.1	91.0%	$	2,819.9	91.9%
Underground facility locating	204.5		6.1%	182.7		5.8%	88.6		6.3%	167.9		5.5%
Electrical and gas utilities and other	103.3		3.1%	89.2		2.9%	38.6		2.7%	79.1		2.6%
Total contract revenues	$	3,339.7	100.0%	$	3,127.7	100.0%	$	1,411.3	100.0%	$	3,066.9	100.0%

Customers whose contract revenues exceeded 10% of total contract revenues during fiscal 2020, fiscal 2019, the 2018 transition period, or fiscal 2017, as well as total contract revenues from all other customers combined, were as follows:

	Fiscal Year Ended						Six Months Ended		Fiscal Year Ended
	January 25, 2020			January 26, 2019			January 27, 2018		July 29, 2017
	Amount		% of Total	Amount		% of Total	Amount	% of Total	Amount	% of Total
Verizon Communications Inc.(1)	$728.2		21.8%	$599.8		19.2%	$168.7	12.0%	$282.7	9.2%
AT&T Inc.	687.9		20.6%	664.2		21.2%	290.1	20.6%	806.7	26.3%
Century Link, Inc.(2)	547.8		16.4%	425.6		13.6%	247.0	17.5%	556.8	18.2%
Comcast Corporation	503.2		15.1%	650.2		20.8%	304.4	21.6%	543.6	17.7%
Total other customers combined	872.6		26.1%	787.9		25.2%	401.1	28.3%	877.1	28.6%
Total contract revenues	$	3,339.7	100.0%	$	3,127.7	100.0%	$1,411.3	100.0%	$3,066.9	100.0%

⁽¹⁾ For comparison purposes in the table above, amounts from Verizon Communications Inc. and XO Communications LLC’s fiber-optic network business have been combined for periods prior to their February 2017 merger.

⁽²⁾ For comparison purposes in the table above, amounts from CenturyLink, Inc. and Level 3 Communications, Inc. have been combined for periods prior to their November 2017 merger.