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Supplemental Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Cash Flows (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Cash flows from operating activities: |  |  |  |
Net income (loss) | $ 927 | $ 966 | $ 2,108 | $ 2,248
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |  |
Changes in operating assets and liabilities |  |  | (643) | (402)
Depreciation and amortization | 636 | 562 | 1,255 | 1,115
Income taxes |  |  | 27 | 118
Gains on sales of facilities | (18) | (9) | (17) | (414)
Amortization of debt issuance costs and discounts |  |  | 16 | 15
Share-based compensation |  |  | 158 | 134
Other |  |  | 67 | 51
Net cash provided by (used in) operating activities |  |  | 2,971 | 2,865
Cash flows from investing activities: |  |  |  |
Purchase of property and equipment |  |  | (1,745) | (1,574)
Acquisition of hospitals and health care entities |  |  | (1,504) | (538)
Disposition of hospitals and health care entities |  |  | 41 | 799
Change in investments |  |  | 59 | 23
Other |  |  | 36 | (25)
Net cash used in investing activities |  |  | (3,113) | (1,315)
Cash flows from financing activities: |  |  |  |
Issuance of long-term debt |  |  | 6,451 |
Net change in revolving credit facilities |  |  | (3,040) | 210
Repayment of long-term debt |  |  | (98) | (101)
Distributions to noncontrolling interests |  |  | (247) | (185)
Payment of debt issuance costs |  |  | (63) | (2)
Payment of cash dividends |  |  | (278) | (245)
Repurchases of common stock |  |  | (520) | (893)
Other |  |  | (135) | (192)
Net cash provided by (used in) financing activities |  |  | 2,070 | (1,408)
Effect on exchange rate changes on cash and cash equivalents |  |  |  | (6)
Change in cash and cash equivalents |  |  | 1,928 | 136
Cash and cash equivalents at beginning of period |  |  | 502 | 732
Cash and cash equivalents at end of period | 2,430 | 868 | 2,430 | 868
HCA Healthcare, Inc. Issuer [Member] |  |  |  |
Cash flows from operating activities: |  |  |  |
Net income (loss) | 783 | 820 | 1,822 | 1,964
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |  |
Changes in operating assets and liabilities |  |  | 0 | 0
Income taxes |  |  | 27 | 118
Equity in earnings of affiliates |  |  | (1,848) | (1,942)
Other |  |  | 54 | 43
Net cash provided by (used in) operating activities |  |  | 55 | 183
Cash flows from financing activities: |  |  |  |
Payment of cash dividends |  |  | (278) | (245)
Repurchases of common stock |  |  | (520) | (893)
Changes in intercompany balances with affiliates, net |  |  | 1,165 | 1,150
Other |  |  | (122) | (196)
Net cash provided by (used in) financing activities |  |  | 245 | (184)
Change in cash and cash equivalents |  |  | 300 | (1)
Cash and cash equivalents at beginning of period |  |  |  | 1
Cash and cash equivalents at end of period | 300 |  | 300 |
HCA Inc. Issuer [Member] |  |  |  |
Cash flows from operating activities: |  |  |  |
Net income (loss) | (775) | (666) | (1,539) | (1,308)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |  |
Changes in operating assets and liabilities |  |  | 40 | 2
Amortization of debt issuance costs and discounts |  |  | 16 | 15
Net cash provided by (used in) operating activities |  |  | (1,483) | (1,291)
Cash flows from financing activities: |  |  |  |
Issuance of long-term debt |  |  | 6,451 |
Net change in revolving credit facilities |  |  | (3,040) | 210
Repayment of long-term debt |  |  | (47) | (41)
Payment of debt issuance costs |  |  | (63) | (2)
Changes in intercompany balances with affiliates, net |  |  | (1,818) | 1,124
Net cash provided by (used in) financing activities |  |  | 1,483 | 1,291
Subsidiary Guarantors [Member] |  |  |  |
Cash flows from operating activities: |  |  |  |
Net income (loss) | 1,505 | 1,306 | 3,087 | 2,876
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |  |
Changes in operating assets and liabilities |  |  | (305) | (352)
Depreciation and amortization | 354 | 329 | 709 | 652
Gains on sales of facilities | (8) | 23 | (7) | (372)
Share-based compensation |  |  | 158 | 134
Other |  |  | 14 |
Net cash provided by (used in) operating activities |  |  | 3,656 | 2,938
Cash flows from investing activities: |  |  |  |
Purchase of property and equipment |  |  | (953) | (900)
Acquisition of hospitals and health care entities |  |  | (35) | (438)
Disposition of hospitals and health care entities |  |  | 30 | 767
Change in investments |  |  | 14 | 17
Other |  |  | (9) | (30)
Net cash used in investing activities |  |  | (953) | (584)
Cash flows from financing activities: |  |  |  |
Repayment of long-term debt |  |  | (31) | (38)
Distributions to noncontrolling interests |  |  | (44) | (43)
Changes in intercompany balances with affiliates, net |  |  | (1,102) | (2,188)
Net cash provided by (used in) financing activities |  |  | (1,177) | (2,269)
Change in cash and cash equivalents |  |  | 1,526 | 85
Cash and cash equivalents at beginning of period |  |  | 174 | 112
Cash and cash equivalents at end of period | 1,700 | 197 | 1,700 | 197
Subsidiary Non-Guarantors [Member] |  |  |  |
Cash flows from operating activities: |  |  |  |
Net income (loss) | 236 | 358 | 586 | 658
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |  |
Changes in operating assets and liabilities |  |  | (378) | (52)
Depreciation and amortization | 282 | 233 | 546 | 463
Gains on sales of facilities | (10) | (32) | (10) | (42)
Other |  |  | (1) | 8
Net cash provided by (used in) operating activities |  |  | 743 | 1,035
Cash flows from investing activities: |  |  |  |
Purchase of property and equipment |  |  | (792) | (674)
Acquisition of hospitals and health care entities |  |  | (1,469) | (100)
Disposition of hospitals and health care entities |  |  | 11 |
Change in investments |  |  | 45 | 6
Other |  |  | 45 | 5
Net cash used in investing activities |  |  | (2,160) | (731)
Cash flows from financing activities: |  |  |  |
Repayment of long-term debt |  |  | (20) | (22)
Distributions to noncontrolling interests |  |  | (203) | (142)
Changes in intercompany balances with affiliates, net |  |  | 1,755 | (86)
Other |  |  | (13) | 4
Net cash provided by (used in) financing activities |  |  | 1,519 | (246)
Effect on exchange rate changes on cash and cash equivalents |  |  |  | (6)
Change in cash and cash equivalents |  |  | 102 | 52
Cash and cash equivalents at beginning of period |  |  | 328 | 619
Cash and cash equivalents at end of period | 430 | 671 | 430 | 671
Eliminations [Member] |  |  |  |
Cash flows from operating activities: |  |  |  |
Net income (loss) | $ (822) | $ (852) | (1,848) | (1,942)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: |  |  |  |
Equity in earnings of affiliates |  |  | $ 1,848 | $ 1,942

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- Definition The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
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