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Condensed Consolidated Statement of Equity Statement - USD ($) shares in Millions, $ in Millions | Total | Preferred stock | Common stock | Additional paid-in capital | Accumulated Other Comprehensive Income | Retained earnings | Treasury stock | Parent | Noncontrolling interest | 2018 Share Repurchase Program | 2018 Share Repurchase Program Common stock | 2018 Share Repurchase Program Additional paid-in capital | 2018 Share Repurchase Program Retained earnings | 2018 Share Repurchase Program Treasury stock | 2018 Share Repurchase Program Parent | 2019 Share Repurchase Program | 2019 Share Repurchase Program Common stock | 2019 Share Repurchase Program Additional paid-in capital | 2019 Share Repurchase Program Retained earnings | 2019 Share Repurchase Program Treasury stock | 2019 Share Repurchase Program Parent | December 2019 Share Repurchase Program | December 2019 Share Repurchase Program Common stock | December 2019 Share Repurchase Program Additional paid-in capital | December 2019 Share Repurchase Program Retained earnings | December 2019 Share Repurchase Program Treasury stock | December 2019 Share Repurchase Program Parent
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Beginning balance, shares at Dec. 31, 2018 |  | 0.0 | (221.0) |  |  |  | (23.8) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2018 | $ 13,031.6 | $ 0.0 | $ 0.1 | $ 0.0 | $ (240.4) | $ 16,257.0 | $ (2,977.1) | $ 13,039.6 | $ (8.0) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 2,902.9 |  |  |  |  | 2,902.9 |  | 2,902.9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss), net of tax | (12.9) |  |  |  | (12.5) |  |  | (12.5) | (0.4) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, increase (decrease) other | 4.3 |  |  |  |  |  |  | 0.0 | 4.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock, at cost, shares |  |  |  |  |  |  |  |  |  |  |  |  |  | (8.9) |  |  |  |  |  | (3.9) |  |  |  |  |  |  |
Repurchase of common stock, at cost |  |  |  |  |  |  |  |  |  | $ (2,147.4) |  |  |  | $ (2,147.4) | $ (2,147.4) | $ (909.9) |  |  |  | $ (909.9) | $ (909.9) |  |  |  |  |  |
Retirement of common stock pursuant to Share Repurchase Programs, at cost, shares |  |  |  |  |  |  |  |  |  |  | (8.9) |  |  | (8.9) |  |  | (3.9) |  |  | (3.9) |  |  |  |  |  |  |
Retirement of common stock pursuant to Share Repurchase Progams, at cost |  |  |  |  |  |  |  |  |  | 0.0 | $ 0.0 | $ (110.5) | $ (2,036.9) | $ 2,147.4 | 0.0 |  |  | $ (19.7) | $ (890.2) | $ 909.9 |  |  |  |  |  |  |
Issuance of common stock under stock option and stock purchase plans, shares |  |  | 0.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock option and stock purchase plans | 26.2 |  | $ 0.0 | 26.2 |  |  |  | 26.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under award plan, shares |  |  | 0.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock award plan | (50.0) |  | $ 0.0 | 0.0 |  | (50.0) |  | (50.0) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation related to share-based payments | 104.0 |  |  | 104.0 |  | 0.0 |  | 104.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance at Jun. 30, 2019 | 12,948.8 | $ 0.0 | $ 0.1 | 0.0 | (252.9) | 16,182.8 | $ (2,977.1) | 12,952.9 | (4.1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance, shares at Jun. 30, 2019 |  | 0.0 | (208.6) |  |  |  | (23.8) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, shares at Mar. 31, 2019 |  | 0.0 | (219.0) |  |  |  | (23.8) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at Mar. 31, 2019 | 13,822.0 | $ 0.0 | $ 0.1 | 0.0 | (219.8) | 17,026.7 | $ (2,977.1) | 13,829.9 | (7.9) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 1,494.1 |  |  |  |  | 1,494.1 |  | 1,494.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss), net of tax | (33.5) |  |  |  | (33.1) |  |  | (33.1) | (0.4) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, increase (decrease) other | 4.2 |  |  |  |  |  |  | 0.0 | 4.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock, at cost, shares |  |  |  |  |  |  |  |  |  |  |  |  |  | (6.5) |  |  |  |  |  | (3.9) |  |  |  |  |  |  |
Repurchase of common stock, at cost |  |  |  |  |  |  |  |  |  | (1,491.6) |  |  |  | $ (1,491.6) | (1,491.6) | $ (909.9) |  |  |  | $ (909.9) | (909.9) |  |  |  |  |  |
Retirement of common stock pursuant to Share Repurchase Programs, at cost, shares |  |  |  |  |  |  |  |  |  |  | (6.5) |  |  | (6.5) |  |  | (3.9) |  |  | (3.9) |  |  |  |  |  |  |
Retirement of common stock pursuant to Share Repurchase Progams, at cost |  |  |  |  |  |  |  |  |  | $ 0.0 | $ 0.0 | $ (44.9) | $ (1,446.7) | $ 1,491.6 | $ 0.0 |  |  | (19.7) | (890.2) | $ 909.9 |  |  |  |  |  |  |
Issuance of common stock under stock option and stock purchase plans, shares |  |  | 0.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock option and stock purchase plans | 9.6 |  | $ 0.0 | 9.6 |  |  |  | 9.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under award plan, shares |  |  | 0.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock award plan | (1.1) |  | $ 0.0 | 0.0 |  | (1.1) |  | (1.1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation related to share-based payments | 55.0 |  |  | 55.0 |  | 0.0 |  | 55.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance at Jun. 30, 2019 | 12,948.8 | $ 0.0 | $ 0.1 | 0.0 | (252.9) | 16,182.8 | $ (2,977.1) | 12,952.9 | (4.1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance, shares at Jun. 30, 2019 |  | 0.0 | (208.6) |  |  |  | (23.8) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, shares at Dec. 31, 2019 |  | 0.0 | (198.0) |  |  |  | (23.8) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2019 | 13,339.1 | $ 0.0 | $ 0.1 | 0.0 | (135.2) | 16,455.4 | $ (2,977.1) | 13,343.2 | (4.1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 2,999.0 |  |  |  |  | 2,941.2 |  | 2,941.2 | 57.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss), net of tax | (44.0) |  |  |  | (45.8) |  |  | (45.8) | 1.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, increase (decrease) other | (75.0) |  |  |  |  |  |  |  | (75.0) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock, at cost, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4.1) |  |  |  | (4.1) |  | (12.2) |  |  |  | (12.2) |
Repurchase of common stock, at cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (1,279.1) |  |  |  | $ (1,279.1) | $ (1,279.1) | $ (3,750.0) |  |  |  | $ (3,750.0) | $ (3,750.0)
Retirement of common stock pursuant to Share Repurchase Programs, at cost, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4.1) |  |  | (4.1) |  |  | (12.2) |  |  | (12.2) |
Retirement of common stock pursuant to Share Repurchase Progams, at cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.0 |  | $ (71.0) | $ (1,208.1) | $ 1,279.1 |  | $ 0.0 |  | $ (76.2) | $ (3,673.8) | $ 3,750.0 |
Issuance of common stock under stock option and stock purchase plans, shares |  |  | 0.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock option and stock purchase plans | 29.1 |  | $ 0.0 | 29.1 |  |  |  | 29.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under award plan, shares |  |  | 0.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock award plan | (48.0) |  | $ 0.0 | 0.0 |  | (48.0) |  | (48.0) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation related to share-based payments | 118.8 |  |  | 118.8 |  |  |  | 118.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other | (0.7) |  |  | (0.7) |  |  |  | (0.7) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance at Jun. 30, 2020 | 11,289.2 | $ 0.0 | $ 0.1 | 0.0 | (181.0) | 14,466.7 | $ (2,977.1) | 11,308.7 | (19.5) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance, shares at Jun. 30, 2020 |  | 0.0 | (182.1) |  |  |  | (23.8) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance, shares at Mar. 31, 2020 |  | 0.0 | (191.1) |  |  |  | (23.8) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at Mar. 31, 2020 | 12,536.9 | $ 0.0 | $ 0.1 | 0.1 | (149.3) | 15,673.1 | $ (2,977.1) | 12,546.9 | (10.0) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 1,606.5 |  |  |  |  | 1,542.1 |  | 1,542.1 | 64.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss), net of tax | (30.6) |  |  |  | (31.7) |  |  | (31.7) | 1.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, increase (decrease) other | (75.0) |  |  |  |  |  |  | 0.0 | (75.0) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of common stock, at cost, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (9.0) |  |  |  | (9.0) |
Repurchase of common stock, at cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (2,808.9) |  |  |  | $ (2,808.9) | (2,808.9)
Retirement of common stock pursuant to Share Repurchase Programs, at cost, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (9.0) |  |  | (9.0) |
Retirement of common stock pursuant to Share Repurchase Progams, at cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.0 | $ 0.0 | $ (60.7) | $ (2,748.2) | $ 2,808.9 | $ 0.0
Issuance of common stock under stock option and stock purchase plans, shares |  |  | 0.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock option and stock purchase plans | 11.1 |  | $ 0.0 | 11.1 |  |  |  | 11.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under award plan, shares |  |  | 0.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock award plan | (0.3) |  | $ 0.0 | 0.0 |  | (0.3) |  | (0.3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation related to share-based payments | 49.5 |  |  | 49.5 |  |  |  | 49.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other | 0.0 |  |  | 0.0 |  |  |  | 0.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance at Jun. 30, 2020 | $ 11,289.2 | $ 0.0 | $ 0.1 | $ 0.0 | $ (181.0) | $ 14,466.7 | $ (2,977.1) | $ 11,308.7 | $ (19.5) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ending balance, shares at Jun. 30, 2020 |  | 0.0 | (182.1) |  |  |  | (23.8) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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