Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2019

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

		As of September 30, 2019					As of December 31, 2018
(dollars in millions)	Maturity	Interest Rate		Amount			Interest Rate		Amount
Credit Facilities
CDW UK revolving credit facility(1)	July 2021	—	%	$	—		—	%	$	—
Senior secured asset-based revolving credit facility	March 2022	3.31	%	26.0			—	%	—
Total credit facilities				26.0					—
Term Loans
CDW UK term loan(1)	August 2021	2.16	%	56.5			2.29	%	65.0
Senior secured term loan facility(2)	August 2023	3.80	%	1,442.0			4.10	%	1,453.2
Total term loans				1,498.5					1,518.2
Unsecured Senior Notes
Senior notes due 2023 ("2023 Senior Notes")	September 2023	—	%	—			5.00	%	525.0
Senior notes due 2024 ("2024 Senior Notes")	December 2024	5.50	%	575.0			5.50	%	575.0
Senior notes due 2025 ("2025 Senior Notes")	September 2025	5.00	%	600.0			5.00	%	600.0
Senior notes due 2028 ("2028 Senior Notes")	April 2028	4.25	%	600.0			—	%	—
Total unsecured senior notes				1,775.0					1,700.0
Other long-term obligations				4.4					8.3
Unamortized deferred financing fees				(19.5		)			(17.9		)
Current maturities of long-term debt				(25.4		)			(25.3		)
Total long-term debt				$	3,259.0				$	3,183.3

(1) British pound-denominated debt facilities.

(2)

See Note 14 (Subsequent Events).

Carrying Value of Long-Term Debt

The approximate fair values and related carrying values of the Company's long-term debt, including current maturities and excluding unamortized discount and unamortized deferred financing fees, are as follows:

(in millions)	September 30, 2019		December 31, 2018
Fair value	$	3,412.3	$	3,145.8
Carrying value	3,303.9		3,226.5