Fair Value Measurements and Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Assets
Short-term investments	$ 2,528
Short-term investments	2,524	$ 2,507
Corporate debt securities \| Other assets, noncurrent
Assets
Short-term investments	4	4
Fair Value, Recurring
Assets
Cash and cash equivalents	2,558	2,369
Short-term investments	2,524	2,507
Total assets at fair value	7,398	6,267
Liabilities
Total liabilities at fair value	15	60
Fair Value, Recurring \| Foreign exchange derivative
Liabilities
Other liabilities, current	15	55
Other liabilities, noncurrent		5
Fair Value, Recurring \| Prepaids and other current assets \| Foreign exchange derivative
Assets
Other assets	35	27
Fair Value, Recurring \| Certificates of deposit
Assets
Short-term investments	13	172
Fair Value, Recurring \| Government bonds
Assets
Short-term investments	345	333
Fair Value, Recurring \| Commercial paper
Assets
Short-term investments	500	366
Fair Value, Recurring \| Corporate debt securities
Assets
Short-term investments	1,479	1,491
Fair Value, Recurring \| Corporate debt securities \| Other assets, noncurrent
Assets
Other assets	4	4
Fair Value, Recurring \| Mortgage-backed and asset-backed securities
Assets
Short-term investments	187	145
Fair Value, Recurring \| Money market funds
Assets
Cash and cash equivalents	2,144	2,018
Funds receivable and amounts held on behalf of customers	2,277	1,360
Fair Value, Recurring \| Certificates of deposit
Assets
Cash and cash equivalents		1
Fair Value, Recurring \| Government bonds
Assets
Cash and cash equivalents	124	115
Fair Value, Recurring \| Commercial paper
Assets
Cash and cash equivalents	251	223
Fair Value, Recurring \| Corporate debt securities
Assets
Cash and cash equivalents	39	12
Fair Value, Recurring \| Level 1
Assets
Cash and cash equivalents	2,144	2,018
Short-term investments	0	0
Total assets at fair value	4,421	3,378
Liabilities
Total liabilities at fair value	0	0
Fair Value, Recurring \| Level 1 \| Foreign exchange derivative
Liabilities
Other liabilities, current	0	0
Other liabilities, noncurrent		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
Short-term investments	0	0
Fair Value, Recurring \| Level 1 \| Government bonds
Assets
Short-term investments	0	0
Fair Value, Recurring \| Level 1 \| Commercial paper
Assets
Short-term investments	0	0
Fair Value, Recurring \| Level 1 \| Corporate debt securities
Assets
Short-term investments	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
Short-term investments	0	0
Fair Value, Recurring \| Level 1 \| Money market funds
Assets
Cash and cash equivalents	2,144	2,018
Funds receivable and amounts held on behalf of customers	2,277	1,360
Fair Value, Recurring \| Level 1 \| Certificates of deposit
Assets
Cash and cash equivalents		0
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	414	351
Short-term investments	2,524	2,507
Total assets at fair value	2,973	2,885
Liabilities
Total liabilities at fair value	15	60
Fair Value, Recurring \| Level 2 \| Foreign exchange derivative
Liabilities
Other liabilities, current	15	55
Other liabilities, noncurrent		5
Fair Value, Recurring \| Level 2 \| Prepaids and other current assets \| Foreign exchange derivative
Assets
Other assets	35	27
Fair Value, Recurring \| Level 2 \| Certificates of deposit
Assets
Short-term investments	13	172
Fair Value, Recurring \| Level 2 \| Government bonds
Assets
Short-term investments	345	333
Fair Value, Recurring \| Level 2 \| Commercial paper
Assets
Short-term investments	500	366
Fair Value, Recurring \| Level 2 \| Corporate debt securities
Assets
Short-term investments	1,479	1,491
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
Short-term investments	187	145
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		1
Fair Value, Recurring \| Level 2 \| Government bonds
Assets
Cash and cash equivalents	124	115
Fair Value, Recurring \| Level 2 \| Commercial paper
Assets
Cash and cash equivalents	251	223
Fair Value, Recurring \| Level 2 \| Corporate debt securities
Assets
Cash and cash equivalents	39	12
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
Other liabilities, noncurrent		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
Short-term investments	0	0
Fair Value, Recurring \| Level 3 \| Government bonds
Assets
Short-term investments	0	0
Fair Value, Recurring \| Level 3 \| Commercial paper
Assets
Short-term investments	0	0
Fair Value, Recurring \| Level 3 \| Corporate debt securities
Assets
Short-term investments	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
Short-term investments	0	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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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Fair value of financial and nonfinancial obligations.

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