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Changes in Other Comprehensive Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax | $ 142 | $ (53) | $ (32)
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax | 173 | 111 | 1
Accumulated Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax | 0 | 0 | (1)
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax | (45) | (25) | (27)
Accumulated Other Comprehensive Income (Loss), Net of Tax | 270 | 33 | (59)
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease) | 228 | 0 |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax | 116 | 96 |
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax | 0 | 0 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax | (22) | (2) |
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Net of Tax | 2 | 4 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax | 20 | (2) | 6
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax | 322 | 94 |
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax | (33) | (21) |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | (86) | (3) |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax | $ (54) | 14 |
Compensation and Employee Benefit Plans [Text Block] | NOTE R - EMPLOYEE RETIREMENT PLANS Defined Benefit Pension Plans Domestic Retirement Plans Following our 2006 acquisition of Guidant, we assumed the Guidant Supplemental Retirement Plan, a frozen, non-qualified defined benefit plan for certain former officers and employees of Guidant. The Guidant Supplemental Retirement Plan was partially funded through a Rabbi Trust that contains segregated company assets within restricted cash used to pay the benefit obligations related to the plan. We also maintain an Executive Retirement Plan, a defined benefit plan covering executive officers and division presidents. Participants may retire with benefits once retirement conditions have been satisfied. U.K. Plan As a result of our acquisition of BTG, we assumed a benefit obligation related to a defined benefit pension plan sponsored by BTG for eligible United Kingdom (U.K.) employees (U.K. Plan). The U.K. Plan was closed to new entrants as of June 1, 2004. Prior to the acquisition close date of August 19, 2019, the Trustees of the U.K. Plan executed buy-in arrangements (Buy-in Contracts), which effectively, as structured under the Buy-in Contracts, are intended to provide payments designed to equal all future designated contractual benefit payments to covered participants. The benefit obligation of the pension plan is not transferred to the insurers, and we remain responsible for paying pension benefits. We do not anticipate any additional material contributions or payments to the U.K. Plan or the insurer. In connection with our preliminary purchase price allocation of BTG, we recorded the assets acquired and liabilities assumed at their respective fair values as of the acquisition date. The following assumptions were used to measure the fair value of the benefit obligation and associated plan assets as of the August 19, 2019 measurement date:
| Discount Rate |  | Expected Return on Plan Assets |  | Rate of Compensation Increase
U.K. Plan | 0.4% |  | 0.4% |  | 3.4%
As of the measurement date of August 19, 2019, the funded status was as follows:
(in millions) |
Fair value of plan assets | $ | 213 |
Benefit obligation | (216 | )
Funded status | $ | (3 | )
Refer to Note B – Acquisitions and Strategic Investments for additional information on our acquisition of BTG. Information about the U.K. Plan presented below is as of the December 31, 2019 measurement date. Other International Retirement Plans In addition, we maintain retirement plans covering certain international employees. We use a December 31 measurement date for these plans and record the net unfunded and underfunded portion as a liability within non-current liabilities, with the current portion within accrued expenses, on the consolidated balance sheets, recognizing changes primarily through OCI. As of December 31, 2019 and 2018, the funded status of our plans were unfunded or underfunded in aggregate. The outstanding obligation is as follows:
| As of December 31, 2019
(in millions) | Accumulated Benefit Obligation (ABO) |  | Projected Benefit Obligation (PBO) |  | Fair value of Plan Assets |  | Unfunded/Underfunded PBO Recognized
Domestic Retirement Plans | $ | 50 |  |  | $ | 54 |  |  | $ | — |  |  | $ | 54 |
U.K. Plan | 212 |  |  | 212 |  |  | 209 |  |  | 3 |
Other International Retirement Plans | 204 |  |  | 223 |  |  | 123 |  |  | 100 |
| $ | 466 |  |  | $ | 488 |  |  | $ | 332 |  |  | $ | 156 |
| As of December 31, 2018
(in millions) | Accumulated Benefit Obligation (ABO) |  | Projected Benefit Obligation (PBO) |  | Fair value of Plan Assets |  | Unfunded/Underfunded PBO Recognized
Domestic Retirement Plans | $ | 47 |  |  | $ | 50 |  |  | $ | — |  |  | $ | 50 |
International Retirement Plans | 166 |  |  | 182 |  |  | 107 |  |  | 75 |
| $ | 213 |  |  | $ | 232 |  |  | $ | 107 |  |  | $ | 125 |
A rollforward of the changes in the PBO for our retirement plans is as follows:
| Year Ended December 31,
(in millions) | 2019 |  | 2018
Beginning obligations | $ | 232 |  |  | $ | 207 |
Acquired and established plans(1) | 216 |  |  | 23 |
Service costs | 15 |  |  | 14 |
Interest costs | 5 |  |  | 4 |
Actuarial (gain) loss | — |  |  | (1 | )
Plan amendments and assumption changes | 11 |  |  | (2 | )
Benefits paid | (10 | ) |  | (10 | )
Impact of foreign currency fluctuations | 19 |  |  | (3 | )
Ending obligation | $ | 488 |  |  | $ | 232 |
(1) | Plans obtained through acquisition and other increases in connection with our international operations. Refer to Note B – Acquisitions and Strategic Investments for additional information regarding the U.K. Plan we acquired with BTG on August 19, 2019.
The critical assumptions associated with our employee retirement plans for 2019 are as follows:
| Weighted Average Discount Rate |  | Weighted Average Expected Return on Plan |  | Weighted Average Rate of Compensation Increase(1)
Domestic Retirement Plans | 2.94% |  | n/a |  | 1.50%
U.K. Plan | 0.60% |  | 0.60% |  | 3.00%
Other International Retirement Plans | 0.75% |  | 2.05% |  | 2.65%
(1) | Rates of compensation increase were not weighted by the relative fair value of the instruments. As such, the amount represents the median of the inputs and is not a weighted average.
The critical assumptions associated with our employee retirement plans for 2018 are as follows:
| Discount Rate |  | Expected Return on Plan Assets |  | Rate of Compensation Increase
Domestic Retirement Plans | 4.00 | % | - | 4.25% |  | n/a |  | 3.00%
International Retirement Plans | 0.50 | % | - | 2.34% |  | 1.90 | % | - | 4.10% |  | 1.50 | % | - | 6.78%
A rollforward of the changes in the fair value of plan assets for our funded retirement plans is as follows:
| Year Ended December 31,
(in millions) | 2019 |  | 2018
Beginning fair value | $ | 107 |  |  | $ | 87 |
Acquired and established plans(1) | 213 |  |  | 16 |
Actual return on plan assets | 7 |  |  | (2 | )
Employer contributions | 13 |  |  | 14 |
Participant contributions | 2 |  |  | 2 |
Actuarial gain (loss) | (20 | ) |  | — |
Benefits paid | (10 | ) |  | (10 | )
Impact of foreign currency fluctuations | 19 |  |  | — |
Ending fair value | $ | 332 |  |  | $ | 107 |
(1) | Plans obtained through acquisition and other increases in connection with our international operations. Refer to Note B – Acquisitions and Strategic Investments for additional information regarding the U.K. Plan we acquired with BTG on August 19, 2019.
For our defined benefit plans excluding our U.K. Plan, we base our discount rate on the rates of return available on high-quality bonds with maturities approximating the expected period over which benefits will be paid. The rate of compensation increase is based on historical and expected rate increases. We base our rate of expected return on plan assets on historical experience, our investment guidelines and expectations for long-term rates of return. Our assets are invested in a variety of securities, primarily equity securities and government bonds. These securities are considered Level 1 and Level 2 investments. For our U.K. Plan, we utilize the insurance buy-in methodology and base our discount rate on a yield curve reflective of the market pricing obtained in the most recent buy-in transaction, which occurred prior to the acquisition of BTG, and movements in market-observed buy-in pricing as of December 31, 2019. We believe this is a reasonable proxy for an effective settlement rate of the buy-in assets. The discount rate is calculated as the single equivalent assumption that gives the same value of the liabilities as if the figures were calculated using the full yield curve. We assume that all pension increases will continue to be linked to the Retail Price Inflation (RPI), both before and after retirement, for all members, with the exception of post-88 Guaranteed Minimum Pensions (GMP), which will be based on Consumer Price Inflation (CPI). We base our rate of expected return on plan assets as equal to the discount rate used to value the buy-in assets. The U.K. Plan assets' investment policy is to invest in fully matching assets. This has been achieved through the purchase of two buy-in policies (Buy-in contracts), which provide payments designed to equal all future benefit payments due from the fund. As of December 31, 2019, the Buy-in contracts represented 99% of the total plan assets, as compared to the target percentage of 100%, and are considered Level 3 investments. The following table presents the fair value hierarchy of the U.K. Plan assets measured at fair value as of December 31, 2019:
| As of
| December 31, 2019
(in millions) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Buy-in contracts | $ | — |  |  | $ | — |  |  | $ | 207 |  |  | $ | 207 |
Cash | 1 |  |  | — |  |  | — |  |  | 1 |
Total assets | $ | 1 |  |  | $ | — |  |  | $ | 207 |  |  | $ | 209 |
Changes in the fair value of the U.K. Plan Level 3 assets were as follows:
(in millions) | Buy-in Contracts
Balance as of December 31, 2018 | $ | — |
Acquired plans(1) | 213 |
Actuarial gain (loss) | (20 | )
Benefits paid | (4 | )
Impact of foreign currency fluctuations | 19 |
Balance as of December 31, 2019 | $ | 209 |
(1) | Refer to Note B – Acquisitions and Strategic Investments for additional information regarding the U.K. Plan we acquired with BTG on August 19, 2019.
Defined Contribution Plan We also sponsor a voluntary 401(k) Retirement Savings Plan for eligible employees. We match 200 percent of employee elective deferrals for the first two percent of employee eligible compensation and 50 percent of employee elective deferrals greater than two percent, but not exceeding six percent, of employee eligible compensation. Total expense for our matching contributions to the plan was $98 million in 2019, $87 million in 2018 and $79 million in 2017. |  |
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax | $ 0 | 1 |
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax | 0 | 0 | 5
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax | 195 | (21) | 48
Other Comprehensive Income (Loss), Net of Tax | $ 237 | $ 91 | $ (59)

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