Indebtedness - Consolidated Leverage Ratio (Details) - Term loans	Dec. 17, 2019	Dec. 19, 2017
Domestic Revolving Commitment Fee | Greater than or equal to 3.50 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.35%
Domestic Revolving Commitment Fee | Between 2.50 to 1.0 and 3.50 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.30%
Domestic Revolving Commitment Fee | Between 1.75 to 1.0 and 2.50 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.275%
Domestic Revolving Commitment Fee | Less than 1.75 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.25%
Global Revolving Commitment Fee | Greater than or equal to 3.50 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.35%
Global Revolving Commitment Fee | Between 2.50 to 1.0 and 3.50 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.30%
Global Revolving Commitment Fee | Between 1.75 to 1.0 and 2.50 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.275%
Global Revolving Commitment Fee | Less than 1.75 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.25%
Letter of Credit Fee | Greater than or equal to 3.50 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	2.00%
Letter of Credit Fee | Between 2.50 to 1.0 and 3.50 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	1.75%
Letter of Credit Fee | Between 1.75 to 1.0 and 2.50 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	1.50%
Letter of Credit Fee | Less than 1.75 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	1.375%
Foreign Credit Commitment/Instrument Fee | Greater than or equal to 3.50 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	1.25%
Fee percentage	0.35%
Foreign Credit Commitment/Instrument Fee | Between 2.50 to 1.0 and 3.50 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	1.00%
Fee percentage	0.30%
Foreign Credit Commitment/Instrument Fee | Between 1.75 to 1.0 and 2.50 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.875%
Fee percentage	0.275%
Foreign Credit Commitment/Instrument Fee | Less than 1.75 to 1.0
Line of Credit Facility [Line Items]
Commitment fee percentage	0.80%
Fee percentage	0.25%
Line of credit | LIBOR Rate Loans | Greater than or equal to 3.50 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	2.00%
Line of credit | LIBOR Rate Loans | Greater than or equal to 3.50 to 1.0 | Minimum
Line of Credit Facility [Line Items]
Leverage ratio		3.50
Line of credit | LIBOR Rate Loans | Between 2.50 to 1.0 and 3.50 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	1.75%
Line of credit | LIBOR Rate Loans | Between 2.50 to 1.0 and 3.50 to 1.0 | Minimum
Line of Credit Facility [Line Items]
Leverage ratio		2.50
Line of credit | LIBOR Rate Loans | Between 2.50 to 1.0 and 3.50 to 1.0 | Maximum
Line of Credit Facility [Line Items]
Leverage ratio		3.50
Line of credit | LIBOR Rate Loans | Between 1.75 to 1.0 and 2.50 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	1.50%
Line of credit | LIBOR Rate Loans | Between 1.75 to 1.0 and 2.50 to 1.0 | Minimum
Line of Credit Facility [Line Items]
Leverage ratio		1.75
Line of credit | LIBOR Rate Loans | Between 1.75 to 1.0 and 2.50 to 1.0 | Maximum
Line of Credit Facility [Line Items]
Leverage ratio		2.50
Line of credit | LIBOR Rate Loans | Less than 1.75 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	1.375%
Line of credit | LIBOR Rate Loans | Less than 1.75 to 1.0 | Maximum
Line of Credit Facility [Line Items]
Leverage ratio		1.75
Line of credit | ABR Loans | Greater than or equal to 3.50 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	1.00%
Line of credit | ABR Loans | Between 2.50 to 1.0 and 3.50 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	0.75%
Line of credit | ABR Loans | Between 1.75 to 1.0 and 2.50 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	0.50%
Line of credit | ABR Loans | Less than 1.75 to 1.0
Line of Credit Facility [Line Items]
Fee percentage	0.375%