Healthy volunteers
Not accepted
Inclusion Criteria: - Male or female, age greater than or equal to 18 years ( for Japan and Taiwan: age greater than or equal to 20 years) at the time of signing informed consent - Type 1 Diabetes Mellitus (based on clinical judgement and/or supported by laboratory analysis as per local guidelines) 12 months or more prior to screening - Currently treated with a basal-bolus insulin regimen for at least 12 months prior to screening (Visit 1) - Currently treated with a basal insulin analogue for at least 4 months prior to screening (Visit 1) - HbA1c 7.0-9.5% (53-80 mmol/mol) (both inclusive) as assessed by central laboratory - Body Mass Index less than or equal to 35.0 kg/m\^2 Exclusion Criteria: - Within the past 180 days any of the following: myocardial infarction, stroke or hospitalization for unstable angina and/or transient ischemic attack - Subjects presently classified as being in New York Heart Association (NYHA) Class IV Currently planned coronary, carotid or peripheral artery revascularisation - Diabetic ketoacidosis requiring hospitalisation within the last 180 days prior to screening (Visit 1) - Treatment with any medication for the indication of diabetes or obesity other than stated in the inclusion criteria in a period of three months before screening (Visit 1)
