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Parent Company Only Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
NET CASH FLOWS FROM OPERATING ACTIVITIES | $ 14,925 | $ 16,239 | $ 14,562 |
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |  |
Net cash flows from investing activities | (9,114) | (7,754) | (8,157) |
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |  |
Proceeds from exercise of stock options | 5 | 44 | 184 |
Issuance of equity | 0 | 0 | 23 |
Purchase of treasury stock | (10,277) | (15,431) | (11,217) |
Net cash flows from related party loans | 306 | (1) | (1) |
Net cash flows from financing activities | (5,767) | (8,885) | (8,953) |
NET INCREASE IN CASH AND CASH EQUIVALENTS | 44 | (400) | (2,548) |
CASH AND CASH EQUIVALENTS, beginning of period | 645 | 601 | 1,001 | $ 3,549
CASH AND CASH EQUIVALENTS, end of period | 645 | 601 | 1,001 | 3,549
Parent Company [Member] |  |  |  |
NET CASH FLOWS FROM OPERATING ACTIVITIES | (1,247) | (84) | (49) |
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |  |
Contribution to subsidiaries | (33) | (44) | (208) |
Distributions from subsidiaries | 11,246 | 15,516 | 11,268 |
Net cash flows from investing activities | 11,213 | 15,472 | 11,060 |
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |  |
Proceeds from exercise of stock options | 5 | 44 | 184 |
Issuance of equity | 0 | 0 | 23 |
Purchase of treasury stock | (10,277) | (15,431) | (11,217) |
Net cash flows from financing activities | (9,966) | (15,388) | (11,011) |
NET INCREASE IN CASH AND CASH EQUIVALENTS | 0 | 0 | 0 |
CASH AND CASH EQUIVALENTS, beginning of period | 0 | 0 | 0 | 0
CASH AND CASH EQUIVALENTS, end of period | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3044-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126999549&loc=SL98516268-108586 + Details
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- Definition Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=123444420&loc=d3e33268-110906 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3521-108585 + Details
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