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Retirement Plans (Tables)
 12 Months Ended
Dec. 31, 2017
Retirement Benefits [Abstract]  
Defined Contribution Plan Disclosures
 
2017
 
2016
 
2015
Plan expense
$
181

 
$
166

 
$
148

Expense funded with Stryker common stock
25

 
22

 
20

Stryker common stock held by plan:
 
 
 
 
 
Dollar amount
353

 
272

 
203

Shares (in millions)
2.3

 
2.3

 
2.2

Value as a percentage of total plan assets
11
%
 
11
%
 
11
%
Schedule of Costs of Retirement Plans
Components of Net Periodic Pension Cost
Net periodic benefit cost:
2017
 
2016
 
2015
Service cost
$
(42
)
 
$
(33
)
 
$
(36
)
Interest cost
(10
)
 
(11
)
 
(10
)
Expected return on plan assets
11

 
10

 
11

Amortization of prior service credit
1

 
1

 
1

Recognized actuarial loss
(9
)
 
(9
)
 
(13
)
Net periodic benefit cost
$
(49
)
 
$
(42
)
 
$
(47
)
Changes in assets and benefit obligations recognized in OCI:
Net actuarial gain (loss)
$
(25
)
 
$
(26
)
 
$
26

Recognized net actuarial loss
9

 
9

 
13

Prior service (credit) cost and transition amount
(1
)
 
(1
)
 
(1
)
Total recognized in other comprehensive income (loss)
$
(17
)
 
$
(18
)
 
$
38

Total recognized in net periodic benefit cost and OCI
$
(66
)
 
$
(60
)
 
$
(9
)
 
 
 
 
 
 
Weighted-average rates used to determine net periodic benefit cost:
Discount rate
1.8
%
 
2.1
%
 
2.0
%
Expected return on plan assets
3.3
%
 
3.6
%
 
4.0
%
Rate of compensation increase
2.8
%
 
2.3
%
 
2.9
%
Weighted-average discount rate used to determine projected benefit obligations
1.8
%
 
1.8
%
 
2.1
%
Schedule of Defined Benefit Plans Disclosures
 
2017
 
2016
Fair value of plan assets
$
370

 
$
308

Benefit obligations
(708
)
 
(588
)
Funded status
$
(338
)
 
$
(280
)
Reported as:
 
 
 
Current liabilities—accrued compensation
$
(2
)
 
$
(1
)
Noncurrent liabilities—other liabilities
(336
)
 
(279
)
Pre-tax amounts recognized in AOCI:
 
 
 
Unrecognized net actuarial loss
(189
)
 
(171
)
Unrecognized prior service credit
12

 
11

Total
$
(177
)
 
$
(160
)
Schedule of Changes in Accumulated Postemployment Benefit Obligations
Change in Benefit Obligations
 
 
 
 
2017
 
2016
Beginning projected benefit obligations
$
588

 
$
529

Service cost
42

 
33

Interest cost
10

 
11

Foreign exchange impact
60

 
(18
)
Employee contributions
6

 
6

Actuarial losses
19

 
40

Acquisition
—

 
7

Benefits paid
(17
)
 
(20
)
Ending projected benefit obligations
$
708

 
$
588

Ending accumulated benefit obligations
$
675

 
$
560
Schedule of Changes in Fair Value of Plan Assets
Valuation of Plan Assets
2017
Level 1
Level 2
Level 3
Total
Cash and cash equivalents
$
4

$
—

$
—

$
4

Equity securities
104

17

—

121

Corporate debt securities
33

1

—

34

Other
148

14

49

211

Total
$
289

$
32

$
49

$
370

2016
 
 
 
 
Cash and cash equivalents
$
7

$
—

$
—

$
7

Equity securities
83

17

—

100

Corporate debt securities
127

—

—

127

Other
23

13

38

74

Total
$
240

$
30

$
38

$
308

Change in Plan Assets
 
 
 
 
2017
 
2016
Beginning fair value of plan assets
$
308

 
$
289

Actual return
21

 
20

Employer contributions
23

 
18

Employee contributions
6

 
6

Foreign exchange impact
26

 
(9
)
Acquisition
—

 
2

Benefits paid
(14
)
 
(18
)
Ending fair value of plan assets
$
370

 
$
308
Schedule of Allocation of Plan Assets
Allocation of Plan Assets
 
2017 Target
2017 Actual
 
2016 Actual
Equity securities
26
%
28
%
 
28
%
Debt securities
45

45

 
50

Other
29

27

 
22

Total
100
%
100
%
 
100
%
Schedule of Expected Benefit Payments
Estimated Future Benefit Payments
2018
2019
2020
2021
2022
2023-2027
$
18

$
17

$
17

$
17

$
17

$
101