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Employee Benefits (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 01, 2017 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
U.K. |  |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |  |
Service cost |  | $ 0 | $ 0 | $ 0 | $ 0
Interest cost |  | 30 | 43 | 60 | 86
Expected return on plan assets, net of administration expenses |  | (49) | (65) | (97) | (129)
Amortization of prior-service cost |  | 0 | 1 | 0 | 1
Amortization of net actuarial loss |  | 8 | 9 | 15 | 17
Net periodic cost (benefit) |  | (11) | (12) | (22) | (25)
Loss on pension settlement |  | 0 | 61 | 0 | 61
Total net periodic cost (benefit) |  | (11) | 49 | (22) | 36
Estimate of contributions to defined benefit pension plans for the current fiscal year |  | 80 |  | 80 |
Contributions made to defined benefit pension plans |  | 26 | 17 | 42 | 34
U.S. |  |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |  |
Service cost |  | 0 | 0 | 0 | 0
Interest cost |  | 24 | 28 | 48 | 55
Expected return on plan assets, net of administration expenses |  | (35) | (39) | (70) | (78)
Amortization of prior-service cost |  | 1 | 1 | 1 | 1
Amortization of net actuarial loss |  | 12 | 12 | 25 | 25
Net periodic cost (benefit) |  | 2 | 2 | 4 | 3
Loss on pension settlement |  | 0 | 0 | 0 | 0
Total net periodic cost (benefit) |  | 2 | 2 | 4 | 3
Estimate of contributions to defined benefit pension plans for the current fiscal year |  | 51 |  | 51 |
Contributions made to defined benefit pension plans |  | 13 | 6 | 26 | 19
Other International Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |  |
Service cost |  | 0 | 0 | 0 | 0
Interest cost |  | 6 | 7 | 12 | 14
Expected return on plan assets, net of administration expenses |  | (11) | (12) | (22) | (24)
Amortization of prior-service cost |  | 0 | 0 | 0 | 0
Amortization of net actuarial loss |  | 3 | 3 | 6 | 5
Net periodic cost (benefit) |  | (2) | (2) | (4) | (5)
Loss on pension settlement |  | 0 | 0 | 0 | 0
Total net periodic cost (benefit) |  | (2) | (2) | (4) | (5)
Estimate of contributions to defined benefit pension plans for the current fiscal year |  | 18 |  | 18 |
Contributions made to defined benefit pension plans |  | $ 9 | $ 3 | $ 11 | $ 10
Subsequent Event | U.S. |  |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |  |
Non-cash contributions by employer | $ 80 |  |  |  |

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- Definition Defined Benefit Plan, Net Periodic Benefit Cost Before Recognized Net Gain (Loss) Due to Settlements and Curtailments + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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