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Schedule I - Condensed Financial Information of Parent (Statement of Cash Flows) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | $ (1,902) | $ (2,755) | $ (2,466)
Investing Activities: |  |  |
Sale of short-term investments | 616 | 627 | 666
Net cash used in investing activities | (3,051) | (2,295) | (2,721)
Financing Activities: |  |  |
Common stock dividends paid | (401) | (381) | (362)
Payments for deferred financing costs | (32) | (107) | (126)
Proceeds from (Payments for) Other Financing Activities | (45) | (53) | (8)
Net cash provided by (used in) financing activities | 797 | (78) | (86)
Effect of exchange rate changes on cash | (46) | (24) | (18)
Cash and cash equivalents, beginning | 1,089 |  |
Cash and cash equivalents, ending | 943 | 1,089 |
SUPPLEMENTAL DISCLOSURES: |  |  |
Cash payments for interest, net of amounts capitalized | (815) | (908) | (946)
Cash payments for income taxes, net of refunds | (459) | (333) | (363)
Issuance of preferred stock | 1,014 | 0 | 0
Sales to noncontrolling interests | 173 | 553 | 128
Parent Company [Member] |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | (570) | (434) | 583
Investing Activities: |  |  |
Proceeds from the sale of business interests, net of expenses | 64 | 412 | 196
Investment in and net advances to subsidiaries | (2,260) | (652) | (596)
Return of capital | 698 | 346 | 411
Additions to property, plant and equipment | (14) | (8) | (8)
Sale of short-term investments | 0 | (1) | 0
Net cash used in investing activities | (1,512) | 97 | 3
Financing Activities: |  |  |
(Repayments) Borrowings under the revolver, net | 295 | (110) | 180
Borrowings of notes payable and other coupon bearing securities | 0 | 3,397 | 0
Repayments of notes payable and other coupon bearing securities | 0 | (3,366) | (450)
Loans from (Repayments to) subsidiaries | 0 | 25 | 40
Proceeds from issuance of common stock | 8 | 4 | 6
Common stock dividends paid | (401) | (381) | (362)
Payments for deferred financing costs | (4) | (38) | (3)
Proceeds from (Payments for) Other Financing Activities | 1 | (3) | (4)
Net cash provided by (used in) financing activities | 912 | (472) | (593)
Effect of exchange rate changes on cash | 0 | 0 | (1)
Total increase (decrease) in cash, cash equivalents and restricted cash | (30) | 59 | (8)
Cash and cash equivalents, beginning | 70 | 11 |
Cash and cash equivalents, ending | 40 | 70 | 11
SUPPLEMENTAL DISCLOSURES: |  |  |
Cash payments for interest, net of amounts capitalized | 79 | 156 | 192
Cash payments for income taxes, net of refunds | 0 | (8) | (5)
Issuance of preferred stock | 1,014 | 0 | 0
Sales to noncontrolling interests | $ (1) | $ 0 | $ 0

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