Fair Value Measurements and Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets
Debt securities, total estimated fair value	$ 2,300
Short-term investments	2,297	$ 2,224
Corporate debt securities \| Other assets, noncurrent
Assets
Debt securities, total estimated fair value	4	4
Fair Value, Recurring
Assets
Cash and cash equivalents	3,021	2,779
Short-term investments	2,297	2,224
Total assets at fair value	7,142	5,522
Liabilities
Total liabilities at fair value	9	31
Fair Value, Recurring \| Foreign exchange derivative
Liabilities
Other liabilities, current	9	31
Fair Value, Recurring \| Prepaids and other current assets \| Foreign exchange derivative
Assets
Other assets	97	14
Fair Value, Recurring \| Certificates of deposit
Assets
Debt securities, total estimated fair value	328	573
Fair Value, Recurring \| Government bonds
Assets
Debt securities, total estimated fair value	291	83
Fair Value, Recurring \| Commercial paper
Assets
Debt securities, total estimated fair value	366	574
Fair Value, Recurring \| Corporate debt securities
Assets
Debt securities, total estimated fair value	1,200	959
Fair Value, Recurring \| Corporate debt securities \| Other assets, noncurrent
Assets
Other assets	4	4
Fair Value, Recurring \| Mortgage-backed and asset-backed securities
Assets
Debt securities, total estimated fair value	111	34
Fair Value, Recurring \| Equity investments
Assets
Equity investments	1	1
Fair Value, Recurring \| Other \| Other assets, noncurrent
Assets
Other assets	5
Fair Value, Recurring \| Money market funds
Assets
Cash and cash equivalents	2,729	2,326
Funds receivable and amounts held on behalf of customers	1,718	501
Fair Value, Recurring \| Certificates of deposit
Assets
Cash and cash equivalents		26
Fair Value, Recurring \| Government bonds
Assets
Cash and cash equivalents	64	32
Fair Value, Recurring \| Commercial paper
Assets
Cash and cash equivalents	220	327
Fair Value, Recurring \| Corporate debt securities
Assets
Cash and cash equivalents	8	68
Fair Value, Recurring \| Level 1
Assets
Cash and cash equivalents	2,729	2,352
Short-term investments	329	574
Total assets at fair value	4,776	3,427
Liabilities
Total liabilities at fair value	0	0
Fair Value, Recurring \| Level 1 \| Foreign exchange derivative
Liabilities
Other liabilities, current	0	0
Fair Value, Recurring \| Level 1 \| Prepaids and other current assets \| Foreign exchange derivative
Assets
Other assets	0	0
Fair Value, Recurring \| Level 1 \| Certificates of deposit
Assets
Debt securities, total estimated fair value	328	573
Fair Value, Recurring \| Level 1 \| Government bonds
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 1 \| Commercial paper
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 1 \| Corporate debt securities
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 1 \| Corporate debt securities \| Other assets, noncurrent
Assets
Other assets	0	0
Fair Value, Recurring \| Level 1 \| Mortgage-backed and asset-backed securities
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 1 \| Equity investments
Assets
Equity investments	1	1
Fair Value, Recurring \| Level 1 \| Other \| Other assets, noncurrent
Assets
Other assets	0
Fair Value, Recurring \| Level 1 \| Money market funds
Assets
Cash and cash equivalents	2,729	2,326
Funds receivable and amounts held on behalf of customers	1,718	501
Fair Value, Recurring \| Level 1 \| Certificates of deposit
Assets
Cash and cash equivalents		26
Fair Value, Recurring \| Level 1 \| Government bonds
Assets
Cash and cash equivalents	0	0
Fair Value, Recurring \| Level 1 \| Commercial paper
Assets
Cash and cash equivalents	0	0
Fair Value, Recurring \| Level 1 \| Corporate debt securities
Assets
Cash and cash equivalents	0	0
Fair Value, Recurring \| Level 2
Assets
Cash and cash equivalents	292	427
Short-term investments	1,968	1,650
Total assets at fair value	2,362	2,091
Liabilities
Total liabilities at fair value	9	31
Fair Value, Recurring \| Level 2 \| Foreign exchange derivative
Liabilities
Other liabilities, current	9	31
Fair Value, Recurring \| Level 2 \| Prepaids and other current assets \| Foreign exchange derivative
Assets
Other assets	97	14
Fair Value, Recurring \| Level 2 \| Certificates of deposit
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 2 \| Government bonds
Assets
Debt securities, total estimated fair value	291	83
Fair Value, Recurring \| Level 2 \| Commercial paper
Assets
Debt securities, total estimated fair value	366	574
Fair Value, Recurring \| Level 2 \| Corporate debt securities
Assets
Debt securities, total estimated fair value	1,200	959
Fair Value, Recurring \| Level 2 \| Corporate debt securities \| Other assets, noncurrent
Assets
Other assets	0	0
Fair Value, Recurring \| Level 2 \| Mortgage-backed and asset-backed securities
Assets
Debt securities, total estimated fair value	111	34
Fair Value, Recurring \| Level 2 \| Equity investments
Assets
Equity investments	0	0
Fair Value, Recurring \| Level 2 \| Other \| Other assets, noncurrent
Assets
Other assets	5
Fair Value, Recurring \| Level 2 \| Money market funds
Assets
Cash and cash equivalents	0	0
Funds receivable and amounts held on behalf of customers	0	0
Fair Value, Recurring \| Level 2 \| Certificates of deposit
Assets
Cash and cash equivalents		0
Fair Value, Recurring \| Level 2 \| Government bonds
Assets
Cash and cash equivalents	64	32
Fair Value, Recurring \| Level 2 \| Commercial paper
Assets
Cash and cash equivalents	220	327
Fair Value, Recurring \| Level 2 \| Corporate debt securities
Assets
Cash and cash equivalents	8	68
Fair Value, Recurring \| Level 3
Assets
Cash and cash equivalents	0	0
Short-term investments	0	0
Total assets at fair value	4	4
Liabilities
Total liabilities at fair value	0	0
Fair Value, Recurring \| Level 3 \| Foreign exchange derivative
Liabilities
Other liabilities, current	0	0
Fair Value, Recurring \| Level 3 \| Prepaids and other current assets \| Foreign exchange derivative
Assets
Other assets	0	0
Fair Value, Recurring \| Level 3 \| Certificates of deposit
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 3 \| Government bonds
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 3 \| Commercial paper
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 3 \| Corporate debt securities
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 3 \| Corporate debt securities \| Other assets, noncurrent
Assets
Other assets	4	4
Fair Value, Recurring \| Level 3 \| Mortgage-backed and asset-backed securities
Assets
Debt securities, total estimated fair value	0	0
Fair Value, Recurring \| Level 3 \| Equity investments
Assets
Equity investments	0	0
Fair Value, Recurring \| Level 3 \| Other \| Other assets, noncurrent
Assets
Other assets	0
Fair Value, Recurring \| Level 3 \| Money market funds
Assets
Cash and cash equivalents	0	0
Funds receivable and amounts held on behalf of customers	0	0
Fair Value, Recurring \| Level 3 \| Certificates of deposit
Assets
Cash and cash equivalents		0
Fair Value, Recurring \| Level 3 \| Government bonds
Assets
Cash and cash equivalents	0	0
Fair Value, Recurring \| Level 3 \| Commercial paper
Assets
Cash and cash equivalents	0	0
Fair Value, Recurring \| Level 3 \| Corporate debt securities
Assets
Cash and cash equivalents	$ 0	$ 0

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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