| Schedule of Marketable Securities | 
 The amortized cost and fair value of our fixed income marketable securities as of the dates indicated below were as follows: 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| As of March 31, 2025 (In thousands) | 
Amortized Cost | 
 | 
Gross Unrealized Gains | 
 | 
Gross Unrealized Losses | 
 | 
Fair Value | 
 
| Corporate debt securities | 
$ | 
968,847  | 
 | 
 | 
$ | 
3,699  | 
 | 
 | 
$ | 
(98) | 
 | 
 | 
$ | 
972,448  | 
 | 
 
| Money market funds and other | 
1,275,947  | 
 | 
 | 
—  | 
 | 
 | 
—  | 
 | 
 | 
1,275,947  | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| Municipal securities | 
55,416  | 
 | 
 | 
137  | 
 | 
 | 
(13) | 
 | 
 | 
55,540  | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| U.S. Government agency securities | 
95,736  | 
 | 
 | 
369  | 
 | 
 | 
(54) | 
 | 
 | 
96,051  | 
 | 
 
| U.S. Treasury securities | 
800,978  | 
 | 
 | 
2,301  | 
 | 
 | 
(431) | 
 | 
 | 
802,848  | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| Subtotal | 
3,196,924  | 
 | 
 | 
6,506  | 
 | 
 | 
(596) | 
 | 
 | 
3,202,834  | 
 | 
 
Add: Time deposits(1)
  | 
340,461  | 
 | 
 | 
—  | 
 | 
 | 
—  | 
 | 
 | 
340,461  | 
 | 
 
| Less: Cash equivalents | 
1,384,950  | 
 | 
 | 
—  | 
 | 
 | 
—  | 
 | 
 | 
1,384,950  | 
 | 
 
Marketable securities(2)
  | 
$ | 
2,152,435  | 
 | 
 | 
$ | 
6,506  | 
 | 
 | 
$ | 
(596) | 
 | 
 | 
$ | 
2,158,345  | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
  
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| As of June 30, 2024 (In thousands) | 
Amortized Cost | 
 | 
Gross Unrealized Gains | 
 | 
Gross Unrealized Losses | 
 | 
Fair Value | 
 
| Corporate debt securities | 
$ | 
775,277  | 
 | 
 | 
$ | 
973  | 
 | 
 | 
$ | 
(2,018) | 
 | 
 | 
$ | 
774,232  | 
 | 
 
| Money market funds and other | 
1,585,832  | 
 | 
 | 
—  | 
 | 
 | 
—  | 
 | 
 | 
1,585,832  | 
 | 
 
| Municipal securities | 
41,343  | 
 | 
 | 
13  | 
 | 
 | 
(197) | 
 | 
 | 
41,159  | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| U.S. Government agency securities | 
106,101  | 
 | 
 | 
26  | 
 | 
 | 
(253) | 
 | 
 | 
105,874  | 
 | 
 
| U.S. Treasury securities | 
754,505  | 
 | 
 | 
209  | 
 | 
 | 
(3,408) | 
 | 
 | 
751,306  | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| Subtotal | 
3,263,058  | 
 | 
 | 
1,221  | 
 | 
 | 
(5,876) | 
 | 
 | 
3,258,403  | 
 | 
 
Add: Time deposits(1)
  | 
932,436  | 
 | 
 | 
—  | 
 | 
 | 
—  | 
 | 
 | 
932,436  | 
 | 
 
| Less: Cash equivalents | 
1,689,540  | 
 | 
 | 
—  | 
 | 
 | 
(1) | 
 | 
 | 
1,689,539  | 
 | 
 
Marketable securities(2)
  | 
$ | 
2,505,954  | 
 | 
 | 
$ | 
1,221  | 
 | 
 | 
$ | 
(5,875) | 
 | 
 | 
$ | 
2,501,300  | 
 | 
 
  
________________ 
(1) Time deposits excluded from fair value measurements. 
(2) Excludes equity marketable securities. 
 | 
| Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value | 
The following table summarizes the fair value and gross unrealized losses of our investments that were in an unrealized loss position as of the dates indicated below.
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| As of March 31, 2025 | 
Less than 12 Months | 
 | 
12 Months or Greater | 
 | 
Total | 
 
| (In thousands) | 
Fair Value | 
 | 
Gross  Unrealized  Losses | 
 | 
Fair Value | 
 | 
Gross  Unrealized  Losses | 
 | 
Fair Value | 
 | 
Gross  Unrealized  Losses | 
 
| Corporate debt securities | 
$ | 
116,450  | 
 | 
 | 
$ | 
(83) | 
 | 
 | 
$ | 
13,499  | 
 | 
 | 
$ | 
(15) | 
 | 
 | 
$ | 
129,949  | 
 | 
 | 
$ | 
(98) | 
 | 
 
| Municipal securities | 
7,937  | 
 | 
 | 
(10) | 
 | 
 | 
2,012  | 
 | 
 | 
(3) | 
 | 
 | 
9,949  | 
 | 
 | 
(13) | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| U.S. Government agency securities | 
25,326  | 
 | 
 | 
(54) | 
 | 
 | 
—  | 
 | 
 | 
—  | 
 | 
 | 
25,326  | 
 | 
 | 
(54) | 
 | 
 
| U.S. Treasury securities | 
175,173  | 
 | 
 | 
(306) | 
 | 
 | 
38,443  | 
 | 
 | 
(125) | 
 | 
 | 
213,616  | 
 | 
 | 
(431) | 
 | 
 
| Total | 
$ | 
324,886  | 
 | 
 | 
$ | 
(453) | 
 | 
 | 
$ | 
53,954  | 
 | 
 | 
$ | 
(143) | 
 | 
 | 
$ | 
378,840  | 
 | 
 | 
$ | 
(596) | 
 | 
 
  
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| As of June 30, 2024 | 
Less than 12 Months | 
 | 
12 Months or Greater | 
 | 
Total | 
 
| (In thousands) | 
Fair Value | 
 | 
Gross  Unrealized  Losses | 
 | 
Fair Value | 
 | 
Gross  Unrealized  Losses | 
 | 
Fair Value | 
 | 
Gross  Unrealized  Losses | 
 
| Corporate debt securities | 
$ | 
355,882  | 
 | 
 | 
$ | 
(942) | 
 | 
 | 
$ | 
100,957  | 
 | 
 | 
$ | 
(1,076) | 
 | 
 | 
$ | 
456,839  | 
 | 
 | 
$ | 
(2,018) | 
 | 
 
| Municipal securities | 
17,364  | 
 | 
 | 
(81) | 
 | 
 | 
10,788  | 
 | 
 | 
(116) | 
 | 
 | 
28,152  | 
 | 
 | 
(197) | 
 | 
 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| U.S. Government agency securities | 
58,598  | 
 | 
 | 
(137) | 
 | 
 | 
17,197  | 
 | 
 | 
(116) | 
 | 
 | 
75,795  | 
 | 
 | 
(253) | 
 | 
 
| U.S. Treasury securities | 
466,144  | 
 | 
 | 
(1,040) | 
 | 
 | 
166,867  | 
 | 
 | 
(2,368) | 
 | 
 | 
633,011  | 
 | 
 | 
(3,408) | 
 | 
 
| Total | 
$ | 
897,988  | 
 | 
 | 
$ | 
(2,200) | 
 | 
 | 
$ | 
295,809  | 
 | 
 | 
$ | 
(3,676) | 
 | 
 | 
$ | 
1,193,797  | 
 | 
 | 
$ | 
(5,876) | 
 | 
 
  
 | 
| Schedule of Contractual Maturities of Securities | 
 The contractual maturities of securities classified as available-for-sale, regardless of their classification on our Condensed Consolidated Balance Sheets, as of the date indicated below were as follows: 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 
| As of March 31, 2025 (In thousands) | 
Amortized Cost | 
 | 
Fair Value | 
 
| Due within one year | 
$ | 
1,126,524  | 
 | 
 | 
$ | 
1,127,648  | 
 | 
 
| Due after one year through three years | 
1,025,911  | 
 | 
 | 
1,030,697  | 
 | 
 
| Total | 
$ | 
2,152,435  | 
 | 
 | 
$ | 
2,158,345  | 
 | 
 
  
 |