XML 124 R110.htm IDEA: XBRL DOCUMENT v3.10.0.1
Leases (Narrative) (Details)
$ in Millions
12 Months Ended
Dec. 22, 2016
USD ($)
ft²
state
item
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Capital Leased Assets [Line Items]        
Capital lease obligations incurred   $ 6 $ 31 $ 179
Proceeds from sale-lease back       $ 159
Accumulated depreciation related to assets under capital leases and financing obligations   193 218  
HCP, Inc. [Member]        
Capital Leased Assets [Line Items]        
Number of buildings in transaction | item 10      
Proceeds from sale-lease back $ 159      
Area of real estate property | ft² 756,183      
Number of states the buildings are located | state 5      
Land and Land Improvements [Member]        
Capital Leased Assets [Line Items]        
Capital leased assets, gross   53 63  
Building and Building Improvements [Member]        
Capital Leased Assets [Line Items]        
Capital leased assets, gross   552 774  
Equipment and Fixture [Member]        
Capital Leased Assets [Line Items]        
Capital leased assets, gross   $ 16 $ 28