XML 83 R73.htm IDEA: XBRL DOCUMENT v3.10.0.1
Employee Benefits - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
May 07, 2014
The Plan        
Defined Benefit Plan Disclosure [Line Items]        
Contributions percentage of annual compensation 8.00%      
Employer contributions $ 25,241,000 $ 20,355,000 $ 20,952,000  
U.S. Plan        
Defined Benefit Plan Disclosure [Line Items]        
Contributions percentage of annual compensation 3.00%      
Participant's contributions percentage matches 50.00%      
Participant's contributions percentage of annual compensation 4.50%      
Deferred salary arrangement employer contribution $ 15,532,000 $ 14,946,000 $ 15,223,000  
United Kingdom        
Defined Benefit Plan Disclosure [Line Items]        
Net gain (loss) for defined benefit pension plan that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next year (100,000)      
Net prior service cost for defined benefit pension plan that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next year $ 0      
Retirement period used as a basis to estimate expected cash flows 10 years      
Expected long-term rate of return after application of a market value reduction factor (per annum) 2.10%      
Contribution to pension fund in the year ending December 31, 2018 $ 200,000      
United Kingdom | iboxx Corporate Bonds        
Defined Benefit Plan Disclosure [Line Items]        
Defined benefit plan bond maturity period 15 years      
Basis point increase in benefits obligation discount rate 10.00%      
United Kingdom | Gilts        
Defined Benefit Plan Disclosure [Line Items]        
Percentage of investments 75.00%      
United Kingdom | Corporate Bonds        
Defined Benefit Plan Disclosure [Line Items]        
Percentage of investments 25.00%      
Switzerland        
Defined Benefit Plan Disclosure [Line Items]        
Net gain (loss) for defined benefit pension plan that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next year $ 95,000      
Net prior service cost for defined benefit pension plan that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next year $ 9,000      
Retirement period used as a basis to estimate expected cash flows 10 years      
Contribution to pension fund in the year ending December 31, 2018 $ 100,000      
Switzerland | Aptiv Solutions        
Defined Benefit Plan Disclosure [Line Items]        
Percentage of common stock acquired       100.00%