Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating activities:
Net income	$ 2,093	$ 2,048
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,148	836
Stock-based compensation	171	164
Deferred taxes	(199)	(247)
Loss on investments	1	8
Net losses from unconsolidated investees	63	91
Other	48	54
Changes in assets and liabilities:
Customer accounts receivable	(210)	(112)
Other current and non-current assets	(84)	(35)
Section 31 fees payable	(4)	(205)
Deferred revenue	167	127
Other current and non-current liabilities	(91)	(156)
Total adjustments	1,010	525
Net cash provided by operating activities	3,103	2,573
Investing activities:
Capital expenditures	(212)	(104)
Capitalized software development costs	(264)	(222)
Purchases of invested margin deposits	(858)	(1,360)
Proceeds from sales of invested margin deposits	1,088	3,396
Cash paid for acquisitions, net of cash acquired	(8)	(10,247)
Proceeds from sale of Promissory Note	75	0
(Purchases of)/proceeds from sale of equity and equity method investments	(24)
(Purchases of)/proceeds from sale of equity and equity method investments		90
Purchases of restricted investments	(654)	(956)
Proceeds from sales of restricted investments	856	0
Net cash used in investing activities	(1)	(9,403)
Financing activities:
Proceeds from debt issuances	739	2,400
Repayments of debt	(1,600)	(1,886)
(Redemption of)/proceeds from commercial paper, net	(583)	2,257
Capital contributions from non-controlling interests	0	9
Dividends paid to stockholders	(780)	(713)
Change in cash and cash equivalent margin deposits and guaranty funds liability	(436)	(64,729)
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises	(77)	(53)
Other	20	4
Net cash used in financing activities	(2,717)	(62,711)
Effect of exchange rate changes on cash, cash equivalents, restricted cash and cash equivalents, and cash and cash equivalent margin deposits and guaranty funds	7	(7)
Net increase/(decrease) in cash, cash equivalents, restricted cash and cash equivalents, and cash and cash equivalent margin deposits and guaranty funds	392	(69,548)
Cash, cash equivalents, restricted cash and cash equivalents, and cash and cash equivalent margin deposits and guaranty funds at beginning of period	80,750	150,343
Cash, cash equivalents, restricted cash and cash equivalents, and cash and cash equivalent margin deposits and guaranty funds at end of period	81,142	80,795
Supplemental cash flow disclosure:
Cash paid for income taxes	776	658
Cash paid for interest	659	524
Reconciliation of the components of cash, cash equivalents, restricted cash and cash equivalents, and cash and cash equivalent margin deposits and guaranty funds to the consolidated balance sheets:
Cash and cash equivalents	755	837
Short-term restricted cash and cash equivalents	1,243	471
Long-term restricted cash and cash equivalents	370	190
Cash and cash equivalent margin deposits and guaranty funds	78,774	79,297
Total	$ 81,142	$ 80,795