Goodwill and Intangible Assets, Net

3 Months Ended

Jun. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill were as follows:


(In millions)	U.S. Pharmaceutical		Prescription Technology Solutions		Medical-Surgical Solutions		International		Total
Balance, March 31, 2021	$	3,963	$	1,542	$	2,453	$	1,535	$	9,493




Foreign currency translation adjustments, net	7		—		—		20		27
Balance, June 30, 2021	$	3,970	$	1,542	$	2,453	$	1,555	$	9,520

Information regarding intangible assets is as follows:


	June 30, 2021							March 31, 2021
(Dollars in millions)	Weighted- Average Remaining Amortization Period (Years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	12	$	3,747	$	(2,329)	$	1,418	$	3,739	$	(2,269)	$	1,470
Service agreements	10	1,088		(530)		558		1,081		(513)		568
Pharmacy licenses	23	503		(252)		251		497		(244)		253
Trademarks and trade names	12	934		(412)		522		925		(394)		531
Technology	4	150		(127)		23		150		(122)		28
Other	6	255		(230)		25		254		(226)		28
Total		$	6,677	$	(3,880)	$	2,797	$	6,646	$	(3,768)	$	2,878

Amortization expense of intangible assets was $98 million and $106 million for the three months ended June 30, 2021 and 2020, respectively. Estimated amortization expense of these assets is as follows: $279 million, $273 million, $261 million, $255 million, and $223 million for the remainder of 2022 and each of the succeeding years through 2026 and $1.5 billion thereafter. All intangible assets were subject to amortization as of June 30, 2021 and March 31, 2021.